400 metres

Athletics
400 metres
Athletics; 400 metres
	The closing stages of a men's 400 m race.
World records
Men	Wayde van Niekerk 43.03 (2016)
Women	Marita Koch 47.60 (1985)
Olympic records
Men	Wayde van Niekerk 43.03 (2016)
Women	Marie-José Pérec 48.25 (1996)
World Championship records
Men	Michael Johnson 43.18 (1999)
Women	Jarmila Kratochvílová 47.99 (1983)

The 400 metres, or 400-meter dash, is a sprint event in track and field competitions. It has been featured in the athletics programme at the Summer Olympics since 1896 for men and since 1964 for women. On a standard outdoor running track, it is one lap around the track. Runners start in staggered positions and race in separate lanes for the entire course. In many countries, athletes previously competed in the 440-yard dash (402.336 m)—which is a quarter of a mile and was referred to as the 'quarter-mile'—instead of the 400 m (437.445 yards), though this distance is now obsolete.

Like other sprint disciplines, the 400 m involves the use of starting blocks. The runners take up position in the blocks on the 'ready' command, adopt a more efficient starting posture which isometrically preloads their muscles on the 'set' command, and stride forwards from the blocks upon hearing the starter's pistol. The blocks allow the runners to begin more powerfully and thereby contribute to their overall sprint speed capability. Maximum sprint speed capability is a significant contributing factor to success in the event, but athletes also require substantial speed endurance and the ability to cope well with high amounts of lactic acid to sustain a fast speed over a whole lap. While considered to be predominantly an anaerobic event, there is some aerobic involvement and the degree of aerobic training required for 400-metre athletes is open to debate.^[1]

The current men's world record is held by Wayde van Niekerk of South Africa, with a time of 43.03 seconds. Van Niekerk is also the Olympic record holder. Steven Gardiner is the reigning Olympic Champion. Michael Norman is the current world champion and the world indoor record holder with a time of 44.52 seconds. The current women's world record is held by Marita Koch, with a time of 47.60 seconds. Shaunae Miller-Uibo is the reigning women's Olympic champion and world champion. Jarmila Kratochvílová holds the world indoor record at 49.59 dating back to 1982. The men's T43 Paralympic world record of 45.07 seconds is held by Oscar Pistorius.^[2]

An Olympic double of 200 metres and 400 m was first achieved by Valerie Brisco-Hooks in 1984, and later by Marie-José Pérec of France and Michael Johnson from the United States on the same evening in 1996. Alberto Juantorena of Cuba at the 1976 Summer Olympics became the first and so far the only athlete to win both the 400 m and 800 m Olympic titles. Pérec became the first to defend the Olympic title in 1996, Johnson became the first and only man to do so in 2000. From 31 appearances in the Olympic Games, the men's gold medalist came from the US 19 times.

Continental records

Updated 22 December 2020.^[3]^[4]

Area	Men			Women
Area	Time (s)	Athlete	Nation	Time (s)	Athlete	Nation
Africa (records)	43.03 WR	Wayde van Niekerk	South Africa	49.10	Falilat Ogunkoya	Nigeria
Asia (records)	43.93	Yousef Masrahi	Saudi Arabia	48.14	Salwa Eid Naser	Bahrain
Europe (records)	44.33	Thomas Schönlebe	East Germany	47.60 WR	Marita Koch	East Germany
North, Central America and Caribbean (records)	43.18	Michael Johnson	United States	48.36	Shaunae Miller-Uibo	Bahamas
Oceania (records)	44.38	Darren Clark	Australia	48.63	Cathy Freeman	Australia
South America (records)	43.93	Anthony Zambrano	Colombia	49.64	Ximena Restrepo	Colombia

All-time top 25

Men (outdoor)

Correct as of June 2022.^[5]^[6]

Ath.#	Perf.#	Time (s)	Athlete	Nation	Date	Place	Ref
1	1	43.03	Wayde van Niekerk	South Africa	14 AUG 2016	Rio de Janeiro	^[7]
2	2	43.18	Michael Johnson	United States	26 AUG 1999	Seville
3	3	43.29	Butch Reynolds	United States	17 AUG 1988	Zürich
	4	43.39	Johnson #2		09 AUG 1995	Gothenburg
	5	43.44	Johnson #3		19 JUN 1996	Atlanta
4	6	43.45	Jeremy Wariner	United States	31 AUG 2007	Osaka
4	6	43.45	Michael Norman	United States	20 APR 2019	Torrance	^[8]
	8	43.48	van Niekerk #2		26 AUG 2015	Beijing
6	8	43.48	Steven Gardiner	Bahamas	04 OCT 2019	Doha	^[9]
	10	43.49	Johnson #4		29 JUL 1996	Atlanta
7	11	43.50	Quincy Watts	United States	05 AUG 1992	Barcelona
	11	43.50	Wariner #2		07 AUG 2007	Stockholm
	13	43.56	Norman #2		25 JUN 2022	Eugene	^[10]
	14	43.60	Norman #3		28 MAY 2022	Eugene	^[11]
	15	43.61	Norman #4		08 JUN 2018	Eugene
	16	43.62	Wariner #3		14 JUL 2006	Rome
	16	43.62	van Niekerk #3		06 JUL 2017	Lausanne
8	18	43.64	Fred Kerley	United States	27 JUL 2019	Des Moines	^[12]
	19	43.65	Johnson #5		17 AUG 1993	Stuttgart
9	19	43.65	LaShawn Merritt	United States	26 AUG 2015	Beijing	^[13]
	21	43.66	Johnson #6		16 JUN 1995	Sacramento
	21	43.66	Johnson #7		03 JUL 1996	Lausanne
	23	43.68	Johnson #8		12 AUG 1998	Zürich
	23	43.68	Johnson #9		16 JUL 2000	Sacramento
	25	43.70	Kerley #2		26 MAY 2017	Austin
10	25	43.70	Champion Allison	United States	25 JUN 2022	Eugene	^[14]
11		43.72	Isaac Makwala	Botswana	05 JUL 2015	La Chaux-de-Fonds	^[15]
12		43.74	Kirani James	Grenada	03 JUL 2014	Lausanne	^[16]
13		43.81	Danny Everett	United States	26 JUN 1992	New Orleans
14		43.85	Randolph Ross	United States	11 JUN 2021	Eugene	^[17]
15		43.86 A	Lee Evans	United States	18 OCT 1968	Mexico City
16		43.87	Steve Lewis	United States	28 SEP 1988	Seoul
17		43.93	Yousef Masrahi	Saudi Arabia	23 AUG 2015	Beijing	^[18]
			Rusheen McDonald	Jamaica	23 AUG 2015	Beijing	^[18]
			Anthony Zambrano	Colombia	02 AUG 2021	Tokyo	^[19]
20		43.94	Akeem Bloomfield	Jamaica	08 JUN 2018	Eugene	^[20]
21		43.97 A	Larry James	United States	18 OCT 1968	Mexico City
22		44.01	Machel Cedenio	Trinidad and Tobago	14 AUG 2016	Rio de Janeiro	^[7]
23		44.02	Baboloki Thebe	Botswana	06 JUL 2017	Lausanne	^[21]
24		44.03	Michael Cherry	United States	03 SEP 2021	Brussels	^[22]
25		44.05	Angelo Taylor	United States	23 JUN 2007	Indianapolis

Women (outdoor)

Correct as of September 2022.^[23]^[24]

Ath.#	Perf.#	Time (s)	Athlete	Nation	Date	Place	Ref
1	1	47.60	Marita Koch	East Germany	06 OCT 1985	Canberra
2	2	47.99	Jarmila Kratochvílová	Czechoslovakia	10 AUG 1983	Helsinki
3	3	48.14	Salwa Eid Naser	Bahrain	03 OCT 2019	Doha	^[25]
	4	48.16	Koch #2		08 SEP 1982	Athens
	4	48.16	Koch #3		16 AUG 1984	Prague
	6	48.22	Koch #4		28 AUG 1986	Stuttgart
4	7	48.25	Marie-José Pérec	France	29 JUL 1996	Atlanta
	8	48.26	Koch #5		27 JUL 1984	Dresden
5	9	48.27	Olga Bryzgina	Soviet Union	06 OCT 1985	Canberra
6	10	48.36	Shaunae Miller-Uibo	Bahamas	06 AUG 2021	Tokyo
	11	48.37	Miller-Uibo #2		03 OCT 2019	Doha
	12	48.45	Kratochvílová #2		23 JUL 1983	Prague
7	13	48.59	Taťána Kocembová	Czechoslovakia	10 AUG 1983	Helsinki
	14	48.60	Koch #6		04 AUG 1979	Turin
	14	48.60	Bryzgina #2		17 AUG 1985	Moscow
	16	48.61	Kratochvílová #3		06 SEP 1981	Rome
8	17	48.63	Cathy Freeman	Australia	29 JUL 1996	Atlanta
	18	48.65	Bryzgina #3		26 SEP 1988	Seoul
9	19	48.70	Sanya Richards-Ross	United States	16 SEP 2006	Athens
	20	48.73	Kocembová #2		16 AUG 1984	Prague
	21	48.77	Koch #7		09 JUL 1982	Karl-Marx-Stadt
	22	48.82	Kratochvílová #4		23 JUN 1983	Prague
10	23	48.83	Valerie Brisco-Hooks	United States	06 AUG 1984	Los Angeles
	23	48.83	Pérec #2		05 AUG 1992	Barcelona
	23	48.83	Richards-Ross #2		04 SEP 2009	Brussels
11		48.89	Ana Guevara	Mexico	27 AUG 2003	Saint-Denis
12		48.99	Marileidy Paulino	Dominican Republic	08 SEP 2022	Zürich	^[26]
13		49.05	Chandra Cheeseborough	United States	06 AUG 1984	Los Angeles
14		49.07	Tonique Williams-Darling	Bahamas	12 SEP 2004	Berlin
15		49.10	Falilat Ogunkoya	Nigeria	29 JUL 1996	Atlanta
16		49.11	Olga Nazarova	Soviet Union	25 SEP 1988	Seoul
17		49.16	Antonina Krivoshapka	Russia	05 JUL 2012	Cheboksary
18		49.19	Mariya Pinigina	Soviet Union	10 AUG 1983	Helsinki
19		49.22	Christine Mboma	Namibia	17 APR 2021	Windhoek
20		49.24	Sabine Busch	East Germany	02 JUN 1984	Erfurt
21		49.26	Allyson Felix	United States	27 AUG 2015	Beijing	^[27]
22		49.28	Pauline Davis	Bahamas	29 JUL 1996	Atlanta
23		49.29	Irena Szewińska	Poland	29 JUL 1976	Montreal
23		49.29	Charity Opara	Nigeria	14 JUL 1998	Rome
25		49.30	Petra Schersing	East Germany	03 JUN 1988	Jena
25		49.30	Lorraine Fenton	Jamaica	19 JUL 2002	Monaco

Annulled marks

Christine Mboma ran 48.54 in Bydgoszcz on 30 June 2021, but her performance was removed from the World Athletics database because of Testosterone regulations in women's athletics.
Aminatou Seyni ran 49.19 in Lausanne on 5 July 2019, but her performance was removed from the World Athletics database because of Testosterone regulations in women's athletics.
Yuliya Gushchina ran 49.28 in Cheboksary on 5 July 2012, but her time was annulled after she tested positive for turinabol—a banned steroid—in a 2016 retest of a sample taken from the 2011 World Championships.^[28]

Men (indoor)

Correct as of March 2022.^[29]

Rank	Time	Athlete	Nation	Date	Place	Ref
1	44.52	Michael Norman	United States	10 March 2018	College Station
2	44.57	Kerron Clement	United States	12 March 2005	Fayetteville
3	44.62	Randolph Ross	United States	12 March 2022	Birmingham	^[30]
4	44.63	Michael Johnson	United States	4 March 1995	Atlanta
5	44.71	Noah Williams	United States	13 March 2021	Fayetteville	^[31]
6	44.80	Kirani James	Grenada	27 February 2011	Fayetteville
7	44.82	Tyrell Richard	United States	9 March 2019	Birmingham	^[32]
8	44.85	Fred Kerley	United States	11 March 2017	College Station
9	44.86	Akeem Bloomfield	Jamaica	10 March 2018	College Station
10	44.88	Bralon Taplin	Grenada	3 February 2018	College Station
11	44.93	LaShawn Merritt	United States	11 February 2005	Fayetteville
12	45.00	Jereem Richards	Trinidad and Tobago	19 March 2022	Belgrade	^[33]
13	45.02	Danny Everett	United States	2 February 1992	Stuttgart
14	45.03	Torrin Lawrence	United States	12 February 2010	Fayetteville
		Deon Lendore	Trinidad and Tobago	1 March 2014	College Station
		Kahmari Montgomery	United States	9 March 2019	Birmingham	^[32]
17	45.04	Champion Allison	United States	26 February 2022	College Station	^[34]
18	45.05	Thomas Schönlebe	East Germany	5 February 1988	Sindelfingen
		Alvin Harrison	United States	28 February 1998	Atlanta
		Karsten Warholm	Norway	2 March 2019	Glasgow	^[35]
		Trevor Bassitt	United States	19 March 2022	Belgrade	^[36]
22	45.11	Nery Brenes	Costa Rica	10 March 2012	Istanbul
23	45.14	Jacory Patterson	United States	13 March 2021	Fayetteville	^[31]
24	45.16	Mylik Kerley	United States	10 March 2018	College Station
24	45.16	Wilbert London	United States	9 March 2019	Birmingham

Notes

Below is a list of other times equal or superior to 45.16:

Michael Johnson also ran 44.66 (1996), 44.97 (1995) and 45.14 (1993).
Randolph Ross also ran 44.83 (2022), 44.99 (2021).
Michael Norman also ran 45.00 (2018).
Fred Kerley also ran 45.02 (2017), 45.03 (2021).
Akeem Bloomfield also ran 45.02 (2018).
Kahmari Montgomery also ran 45.04 (2019).
Torrin Lawrence also ran 45.10 (2010).
Deon Lendore also ran 45.15 (2013).

Women (indoor)

Correct as of February 2021.^[37]

Rank	Time	Athlete	Nation	Date	Place	Ref
1	49.59	Jarmila Kratochvílová	Czechoslovakia	7 March 1982	Milan
2	49.68	Natalya Nazarova	Russia	18 February 2004	Moscow
3	49.76	Taťána Kocembová	Czechoslovakia	2 February 1984	Vienna
4	50.01	Sabine Busch	East Germany	2 February 1984	Vienna
5	50.02	Nicola Sanders	Great Britain	3 March 2007	Birmingham
6	50.04	Olesya Krasnomovets	Russia	18 February 2006	Moscow
6	50.04	Olesya Krasnomovets	Russia	12 March 2006	Moscow
7	50.15	Olga Zaytseva	Russia	25 January 2006	Moscow
8	50.21	Vania Stambolova	Bulgaria	12 March 2006	Moscow
8	50.21	Shaunae Miller-Uibo	Bahamas	13 February 2021	Staten Island	^[38]
10	50.23	Irina Privalova	Russia	12 March 1995	Barcelona
11	50.28	Petra Müller	East Germany	6 March 1988	Budapest
12	50.30	Femke Bol	Netherlands	27 February 2022	Apeldoorn	^[39]
13	50.34	Christine Amertil	Bahamas	12 March 2006	Moscow
13	50.34	Kendall Ellis	United States	10 March 2018	College Station
15	50.36	Sydney McLaughlin	United States	10 March 2018	College Station
16	50.37	Natalya Antyukh	Russia	18 February 2006	Moscow
17	50.40	Dagmar Neubauer	East Germany	2 February 1984	Vienna
18	50.41	Svetlana Pospelova	Russia	5 March 2005	Madrid
19	50.42	Olga Kotlyarova	Russia	27 January 2001	Moscow
20	50.45	Grit Breuer	Germany	1 March 1998	Valencia
21	50.46 A	Phyllis Francis	United States	15 March 2014	Albuquerque
22	50.52	Athing Mu	United States	6 February 2021	College Station	^[40]
23	50.53	Katharine Merry	Great Britain	18 February 2001	Birmingham
24	50.54	Francena McCorory	United States	12 March 2010	Fayetteville
25	50.55	Svetlana Usovich	Belarus	5 March 2005	Madrid
		Antonina Krivoshapka	Russia	14 February 2009	Moscow
		Courtney Okolo	United States	3 March 2018	Birmingham

Notes

Below is a list of other times equal or superior to 50.00:

Jarmila Kratochvílová also ran 49.64 (1981) and 49.69 (1983).
Taťána Kocembová also ran 49.97 (1984).
Natalya Nazarova also ran 49.98 (2006).

Fastest relay splits

Men

Split	Athlete	Date	Place
42.93	Michael Johnson (USA)	22 August 1993	Stuttgart
42.93	Jeremy Wariner (USA)	2 September 2007	Osaka^[41]
43.06	Michael Norman (USA)	27 May 2018	Sacramento^[42]
43.1	Quincy Watts (USA)	8 August 1992	Barcelona
43.1	Jeremy Wariner (USA)	2 September 2007	Osaka
43.2	Ronald Freeman (USA)	20 October 1968	Mexico City
	Butch Reynolds (USA)	22 August 1993	Stuttgart
	Tony McQuay (USA)	20 August 2016	Rio de Janeiro^[43]
43.3	Demetrius Pinder (BAH)	10 August 2012	London

Women

Split	Athlete	Date	Place
47.6	Jarmila Kratochvilova (CZE)	11 September 1982	Athens
47.7	Marita Koch (GDR)	3 June 1984	Erfurt
47.7	Allyson Felix (USA)	30 August 2015	Beijing
47.8	Taťána Kocembová (CZE)	18 August 1984	Prague
	Olga Bryzgina (URS)	1 October 1988	Seoul
	Olga Nazarova (URS)
48.0	Florence Griffith-Joyner (USA)

Most successful athletes

3 or more 400-metre victories at the Olympic Games and World Championships:

6 wins: Michael Johnson (USA) - Olympic Champion in 1996 and 2000, World Champion in 1993, 1995, 1997 and 1999.
4 wins: Marie-Jose Perec (FRA) - Olympic Champion in 1992 and 1996, World Champion in 1991 and 1995.
3 wins: Cathy Freeman (AUS) - Olympic Champion in 2000, World Champion in 1997 and 1999.
3 wins: Jeremy Wariner (USA) - Olympic Champion in 2004, World Champion in 2005 and 2007.
3 wins: Christine Ohuruogu (GBR) - Olympic Champion in 2008, World Champion in 2007 and 2013.
3 wins: LaShawn Merritt (USA) - Olympic Champion in 2008, World Champion in 2009 and 2013.
3 wins: Wayde van Niekerk (RSA) - Olympic Champion in 2016, World Champion in 2015 and 2017.
3 wins: Shaunae Miller-Uibo (BAH) - Olympic Champion in 2016 and 2020, World Champion in 2022.

The Olympic champion has frequently won a second gold medal in the 4 × 400 metres relay. This has been accomplished 14 times by men; Charles Reidpath, Ray Barbuti, Bill Carr, George Rhoden, Charles Jenkins, Otis Davis, Mike Larrabee, Lee Evans, Viktor Markin, Alonzo Babers, Steve Lewis, Quincy Watts, Jeremy Wariner and LaShawn Merritt; and 4 times by women; Monika Zehrt, Valerie Brisco-Hooks, Olga Bryzgina and Sanya Richards-Ross. All but Rhoden, Markin, Zehrt and Bryzgina ran on American relay teams. Injured after his double in 1996, Johnson also accomplished the feat in 2000 only to have it disqualified when his teammate Antonio Pettigrew admitted to doping.

Olympic medalists

Men

edit
Games	Gold	Silver	Bronze
1896 Athens details	Thomas Burke United States	Herbert Jamison United States	Charles Gmelin Great Britain
1900 Paris details	Maxie Long United States	William Holland United States	Ernst Schultz Denmark
1904 St. Louis details	Harry Hillman United States	Frank Waller United States	Herman Groman United States
1908 London details	Wyndham Halswelle Great Britain	None awarded	None awarded
1912 Stockholm details	Charles Reidpath United States	Hanns Braun Germany	Edward Lindberg United States
1920 Antwerp details	Bevil Rudd South Africa	Guy Butler Great Britain	Nils Engdahl Sweden
1924 Paris details	Eric Liddell Great Britain	Horatio Fitch United States	Guy Butler Great Britain
1928 Amsterdam details	Ray Barbuti United States	James Ball Canada	Joachim Büchner Germany
1932 Los Angeles details	Bill Carr United States	Ben Eastman United States	Alex Wilson Canada
1936 Berlin details	Archie Williams United States	Godfrey Brown Great Britain	James LuValle United States
1948 London details	Arthur Wint Jamaica	Herb McKenley Jamaica	Mal Whitfield United States
1952 Helsinki details	George Rhoden Jamaica	Herb McKenley Jamaica	Ollie Matson United States
1956 Melbourne details	Charles Jenkins United States	Karl-Friedrich Haas United Team of Germany	Voitto Hellsten Finland
1956 Melbourne details	Charles Jenkins United States	Karl-Friedrich Haas United Team of Germany	Ardalion Ignatyev Soviet Union
1960 Rome details	Otis Davis United States	Carl Kaufmann United Team of Germany	Malcolm Spence South Africa
1964 Tokyo details	Mike Larrabee United States	Wendell Mottley Trinidad and Tobago	Andrzej Badeński Poland
1968 Mexico City details	Lee Evans United States	Larry James United States	Ron Freeman United States
1972 Munich details	Vincent Matthews United States	Wayne Collett United States	Julius Sang Kenya
1976 Montreal details	Alberto Juantorena Cuba	Fred Newhouse United States	Herman Frazier United States
1980 Moscow details	Viktor Markin Soviet Union	Rick Mitchell Australia	Frank Schaffer East Germany
1984 Los Angeles details	Alonzo Babers United States	Gabriel Tiacoh Ivory Coast	Antonio McKay United States
1988 Seoul details	Steve Lewis United States	Butch Reynolds United States	Danny Everett United States
1992 Barcelona details	Quincy Watts United States	Steve Lewis United States	Samson Kitur Kenya
1996 Atlanta details	Michael Johnson United States	Roger Black Great Britain	Davis Kamoga Uganda
2000 Sydney details	Michael Johnson United States	Alvin Harrison United States	Greg Haughton Jamaica
2004 Athens details	Jeremy Wariner United States	Otis Harris United States	Derrick Brew United States
2008 Beijing details	LaShawn Merritt United States	Jeremy Wariner United States	David Neville United States
2012 London details	Kirani James Grenada	Luguelín Santos Dominican Republic	Lalonde Gordon Trinidad and Tobago
2016 Rio de Janeiro details	Wayde van Niekerk South Africa	Kirani James Grenada	LaShawn Merritt United States
2020 Tokyo details	Steven Gardiner Bahamas	Anthony Zambrano Colombia	Kirani James Grenada
2024 Paris details	Quincy Hall United States	Matthew Hudson Smith Great Britain	Muzala Samukonga Zambia

Women

edit
Games	Gold	Silver	Bronze
1964 Tokyo details	Betty Cuthbert Australia	Ann Packer Great Britain	Judy Amoore Australia
1968 Mexico City details	Colette Besson France	Lillian Board Great Britain	Natalya Pechonkina Soviet Union
1972 Munich details	Monika Zehrt East Germany	Rita Wilden West Germany	Kathy Hammond United States
1976 Montreal details	Irena Szewińska Poland	Christina Brehmer East Germany	Ellen Streidt East Germany
1980 Moscow details	Marita Koch East Germany	Jarmila Kratochvílová Czechoslovakia	Christina Lathan East Germany
1984 Los Angeles details	Valerie Brisco-Hooks United States	Chandra Cheeseborough United States	Kathy Smallwood-Cook Great Britain
1988 Seoul details	Olga Bryzgina Soviet Union	Petra Müller East Germany	Olga Nazarova Soviet Union
1992 Barcelona details	Marie-José Pérec France	Olga Bryzgina Unified Team	Ximena Restrepo Colombia
1996 Atlanta details	Marie-José Pérec France	Cathy Freeman Australia	Falilat Ogunkoya Nigeria
2000 Sydney details	Cathy Freeman Australia	Lorraine Graham Jamaica	Katharine Merry Great Britain
2004 Athens details	Tonique Williams-Darling Bahamas	Ana Guevara Mexico	Natalya Antyukh Russia
2008 Beijing details	Christine Ohuruogu Great Britain	Shericka Williams Jamaica	Sanya Richards United States
2012 London details	Sanya Richards-Ross United States	Christine Ohuruogu Great Britain	DeeDee Trotter United States
2016 Rio de Janeiro details	Shaunae Miller Bahamas	Allyson Felix United States	Shericka Jackson Jamaica
2020 Tokyo details	Shaunae Miller-Uibo Bahamas	Marileidy Paulino Dominican Republic	Allyson Felix United States
2024 Paris details	Marileidy Paulino Dominican Republic	Salwa Eid Naser Bahrain	Natalia Kaczmarek Poland

World Championships medalists

Men

Championships	Gold	Silver	Bronze
1983 Helsinki details	Bert Cameron (JAM)	Michael Franks (USA)	Sunder Nix (USA)
1987 Rome details	Thomas Schönlebe (GDR)	Innocent Egbunike (NGA)	Harry Reynolds (USA)
1991 Tokyo details	Antonio Pettigrew (USA)	Roger Black (GBR)	Danny Everett (USA)
1993 Stuttgart details	Michael Johnson (USA)	Butch Reynolds (USA)	Samson Kitur (KEN)
1995 Gothenburg details	Michael Johnson (USA)	Butch Reynolds (USA)	Greg Haughton (JAM)
1997 Athens details	Michael Johnson (USA)	Davis Kamoga (UGA)	Tyree Washington (USA)
1999 Seville details	Michael Johnson (USA)	Sanderlei Parrela (BRA)	Alejandro Cárdenas (MEX)
2001 Edmonton details	Avard Moncur (BAH)	Ingo Schultz (GER)	Greg Haughton (JAM)
2003 Saint-Denis details	Tyree Washington (USA)	Marc Raquil (FRA)	Michael Blackwood (JAM)
2005 Helsinki details	Jeremy Wariner (USA)	Andrew Rock (USA)	Tyler Christopher (CAN)
2007 Osaka details	Jeremy Wariner (USA)	LaShawn Merritt (USA)	Angelo Taylor (USA)
2009 Berlin details	LaShawn Merritt (USA)	Jeremy Wariner (USA)	Renny Quow (TRI)
2011 Daegu details	Kirani James (GRN)	LaShawn Merritt (USA)	Kévin Borlée (BEL)
2013 Moscow details	LaShawn Merritt (USA)	Tony McQuay (USA)	Luguelín Santos (DOM)
2015 Beijing details	Wayde van Niekerk (RSA)	LaShawn Merritt (USA)	Kirani James (GRN)
2017 London details	Wayde van Niekerk (RSA)	Steven Gardiner (BAH)	Abdalelah Haroun (QAT)
2019 Doha details	Steven Gardiner (BAH)	Anthony Zambrano (COL)	Fred Kerley (USA)
2022 Eugene details	Michael Norman (USA)	Kirani James (GRN)	Matthew Hudson-Smith (GBR)
2023 Budapest details	Antonio Watson (JAM)	Matthew Hudson-Smith (GBR)	Quincy Hall (USA)

Medalists by country

Rank	Nation	Gold	Silver	Bronze	Total
1	United States (USA)	11	8	6	27
2	South Africa (RSA)	2	0	0	2
3	East Germany (GDR)	1	0	0	1
4	Bahamas (BAH)	2	1	0	3
5	Jamaica (JAM)	2	0	3	5
6	Grenada (GRN)	1	1	1	3
7	Great Britain (GBR)	0	2	1	3
8	Brazil (BRA)	0	1	0	1
	France (FRA)	0	1	0	1
	Germany (GER)	0	1	0	1
	Nigeria (NGR)	0	1	0	1
	Uganda (UGA)	0	1	0	1
13	Belgium (BEL)	0	0	1	1
	Canada (CAN)	0	0	1	1
	Dominican Republic (DOM)	0	0	1	1
	Kenya (KEN)	0	0	1	1
	Mexico (MEX)	0	0	1	1
	Trinidad and Tobago (TRI)	0	0	1	1

Women

Championships	Gold	Silver	Bronze
1983 Helsinki details	Jarmila Kratochvílová (TCH)	Taťána Kocembová (TCH)	Mariya Pinigina (URS)
1987 Rome details	Olga Bryzgina (URS)	Petra Muller (GDR)	Kirsten Emmelmann (GDR)
1991 Tokyo details	Marie-José Pérec (FRA)	Grit Breuer (GER)	Sandra Myers (ESP)
1993 Stuttgart details	Jearl Miles (USA)	Natasha Kaiser-Brown (USA)	Sandie Richards (JAM)
1995 Gothenburg details	Marie-José Pérec (FRA)	Pauline Davis (BAH)	Jearl Miles (USA)
1997 Athens details	Cathy Freeman (AUS)	Sandie Richards (JAM)	Jearl Miles Clark (USA)
1999 Seville details	Cathy Freeman (AUS)	Anja Rücker (GER)	Lorraine Graham-Fenton (JAM)
2001 Edmonton details	Amy Mbacké Thiam (SEN)	Lorraine Fenton (JAM)	Ana Guevara (MEX)
2003 Saint-Denis details	Ana Guevara (MEX)	Lorraine Fenton (JAM)	Amy Mbacké Thiam (SEN)
2005 Helsinki details	Tonique Williams-Darling (BAH)	Sanya Richards (USA)	Ana Guevara (MEX)
2007 Osaka details	Christine Ohuruogu (GBR)	Nicola Sanders (GBR)	Novlene Williams (JAM)
2009 Berlin details	Sanya Richards (USA)	Shericka Williams (JAM)	Antonina Krivoshapka (RUS)
2011 Daegu details	Amantle Montsho (BOT)	Allyson Felix (USA)	Francena McCorory (USA)§
2013 Moscow details	Christine Ohuruogu (GBR)	Amantle Montsho (BOT)	Stephanie McPherson (JAM)^§
2015 Beijing details	Allyson Felix (USA)	Shaunae Miller (BAH)	Shericka Jackson (JAM)
2017 London details	Phyllis Francis (USA)	Salwa Eid Naser (BHR)	Allyson Felix (USA)
2019 Doha details	Salwa Eid Naser (BHR)	Shaunae Miller-Uibo (BAH)	Shericka Jackson (JAM)
2022 Eugene details	Shaunae Miller-Uibo (BAH)	Marileidy Paulino (DOM)	Sada Williams (BAR)
2023 Budapest details	Marileidy Paulino (DOM)	Natalia Kaczmarek (POL)	Sada Williams (BAR)

§ : awarded following doping disqualification.

Medalists by country

Rank	Nation	Gold	Silver	Bronze	Total
1	United States (USA)	4	3	4	11
2	Great Britain (GBR)	2	1	0	3
3	Australia (AUS)	2	0	0	2
3	France (FRA)	2	0	0	2
5	Bahamas (BAH)	1	3	0	4
6	Dominican Republic (DOM)	1	1	0	2
	Botswana (BOT)	1	1	0	2
	Czechoslovakia (TCH)	1	1	0	2
	Bahrain (BHR)	1	1	0	2
10	Mexico (MEX)	1	0	2	3
11	Senegal (SEN)	1	0	1	2
11	Soviet Union (URS)	1	0	1	2
13	Jamaica (JAM)	0	4	6	10
14	Germany (GER)	0	2	0	2
15	East Germany (GDR)	0	1	1	2
16	Poland (POL)	0	1	0	1
17	Barbados (BAR)	0	0	2	2
17	Russia (RUS)	0	0	2	2
13	Spain (ESP)	0	0	1	1

World Indoor Championships medalists

Men

Games	Gold	Silver	Bronze
1985 Paris^[A]	Thomas Schönlebe (GDR)	Todd Bennett (GBR)	Mark Rowe (USA)
1987 Indianapolis details	Antonio McKay (USA)	Roberto Hernández (CUB)	Michael Franks (USA)
1989 Budapest details	Antonio McKay (USA)	Ian Morris (TTO)	Cayetano Cornet (ESP)
1991 Seville details	Devon Morris (JAM)	Samson Kitur (KEN)	Cayetano Cornet (ESP)
1993 Toronto details	Butch Reynolds (USA)	Sunday Bada (NGR)	Darren Clark (AUS)
1995 Barcelona details	Darnell Hall (USA)	Sunday Bada (NGR)	Mikhail Vdovin (RUS)
1997 Paris details	Sunday Bada (NGR)	Jamie Baulch (GBR)	Shunji Karube (JPN)
1999 Maebashi details	Jamie Baulch (GBR)	Milton Campbell (USA)	Alejandro Cárdenas (MEX)
2001 Lisbon details	Daniel Caines (GBR)	Milton Campbell (USA)	Danny McFarlane (JAM)
2003 Birmingham details	Tyree Washington (USA)	Daniel Caines (GBR)	Paul McKee (IRL) Jamie Baulch (GBR)
2004 Budapest details	Alleyne Francique (GRN)	Davian Clarke (JAM)	Gary Kikaya (COD)
2006 Moscow details	Alleyne Francique (GRN)	California Molefe (BOT)	Chris Brown (BAH)
2008 Valencia details	Tyler Christopher (CAN)	Johan Wissman (SWE)	Chris Brown (BAH)
2010 Doha details	Chris Brown (BAH)	William Collazo (CUB)	Jamaal Torrance (USA)
2012 Istanbul details	Nery Brenes (CRC)	Demetrius Pinder (BAH)	Chris Brown (BAH)
2014 Sopot details	Pavel Maslák (CZE)	Chris Brown (BAH)	Kyle Clemons (USA)
2016 Portland details	Pavel Maslák (CZE)	Abdalelah Haroun (QAT)	Deon Lendore (TTO)
2018 Birmingham details	Pavel Maslák (CZE)	Michael Cherry (USA)	Deon Lendore (TTO)
2022 Belgrade details	Jereem Richards (TTO)	Trevor Bassitt (USA)	Carl Bengtström (SWE)

Women

Games	Gold	Silver	Bronze
1985 Paris^[A]	Diane Dixon (USA)	Regine Berg (BEL)	Charmaine Crooks (CAN)
1987 Indianapolis details	Sabine Busch (GDR)	Lillie Leatherwood (USA)	Judit Forgács (HUN)
1989 Budapest details	Helga Arendt (FRG)	Diane Dixon (USA)	Jillian Richardson (TTO)
1991 Seville details	Diane Dixon (USA)	Sandra Myers (ESP)	Anita Protti (SUI)
1993 Toronto details	Sandie Richards (JAM)	Tatyana Alekseyeva (RUS)	Jearl Miles Clark (USA)
1995 Barcelona details	Irina Privalova (RUS)	Sandie Richards (JAM)	Daniela Georgieva (BUL)
1997 Paris details	Jearl Miles Clark (USA)	Sandie Richards (JAM)	Helena Fuchsová (CZE)
1999 Maebashi details	Grit Breuer (GER)	Falilat Ogunkoya (NGR)	Jearl Miles Clark (USA)
2001 Lisbon details	Sandie Richards (JAM)	Olga Kotlyarova (RUS)	Olesya Zykina (RUS)
2003 Birmingham details	Natalya Nazarova (RUS)	Christine Amertil (BAH)	Grit Breuer (GER)
2004 Budapest details	Natalya Nazarova (RUS)	Olesya Forsheva (RUS)	Tonique Williams-Darling (BAH)
2006 Moscow details	Olesya Forsheva (RUS)	Vania Stambolova (BUL)	Christine Amertil (BAH)
2008 Valencia details	Olesya Zykina (RUS)	Natalya Nazarova (RUS)	Shareese Woods (USA)
2010 Doha details	Debbie Dunn (USA)	Tatyana Firova (RUS)	Vania Stambolova (BUL)
2012 Istanbul details	Sanya Richards-Ross (USA)	Aleksandra Fedoriva (RUS)	Natasha Hastings (USA)
2014 Sopot details	Francena McCorory (USA)	Kaliese Spencer (JAM)	Shaunae Miller (BAH)
2016 Portland details	Kemi Adekoya (BHR)	Ashley Spencer (USA)	Quanera Hayes (USA)
2018 Birmingham details	Courtney Okolo (USA)	Shakima Wimbley (USA)	Eilidh Doyle (GBR)
2022 Belgrade details	Shaunae Miller-Uibo (BAH)	Femke Bol (NED)	Stephenie Ann McPherson (JAM)

^{^A} Known as the World Indoor Games

Season's bests

Men

Year	Time	Athlete	Place
1966	44.82 y	Wendell Mottley (TTO)	Kingston
1967	44.74+ h	Tommie Smith (USA)	San Jose
1968	43.86 A	Lee Evans (USA)	Mexico City
1969	44.67 y	Curtis Mills (USA)	Knoxville
1970	45.01	Charles Asati (KEN)	Edinburgh
1971	44.44 y h	John Smith (USA)	Eugene
1972	44.34 h	Wayne Collett (USA)	Eugene
1973	44.85 y	Maurice Peoples (USA)	Baton Rouge
1974	44.94 h A	Alberto Juantorena (CUB)	Mexico City
1975	44.45 A	Ronnie Ray (USA)	Mexico City
1976	44.26	Alberto Juantorena (CUB)	Montreal
1977	44.65	Alberto Juantorena (CUB)	La Habana
1978	44.27 A	Alberto Juantorena (CUB)	Medellin
1979	44.92	Harald Schmid (FRG)	Stuttgart
1980	44.60	Viktor Markin (RUS)	Moscow
1981	44.58	Bert Cameron (JAM)	Baton Rouge
1982	44.68	Sunder Nix (USA)	Indianapolis
1983	44.50	Erwin Skamrahl (FRG)	München
1984	44.27	Alonzo Babers (USA)	Los Angeles
1985	44.47	Michael Franks (USA)	Canberra
1986	44.30	Gabriel Tiacoh (CIV)	Indianapolis
1987	44.10	Butch Reynolds (USA)	Columbus
1988	43.29	Butch Reynolds (USA)	Zürich
1989	44.27	Antonio Pettigrew (USA)	Houston
1990	44.06	Danny Everett (USA)	Seville
1991	44.17	Michael Johnson (USA)	Lausanne
1992	43.50	Quincy Watts (USA)	Barcelona
1993	43.65	Michael Johnson (USA)	Stuttgart
1994	43.90	Michael Johnson (USA)	Madrid
1995	43.39	Michael Johnson (USA)	Gothenburg
1996	43.44	Michael Johnson (USA)	Atlanta
1997	43.75	Michael Johnson (USA)	Waco
1998	43.68	Michael Johnson (USA)	Zürich
1999	43.18	Michael Johnson (USA)	Sevilla
2000	43.68	Michael Johnson (USA)	Sacramento
2001	44.28	Tyree Washington (USA)	Los Angeles
2002	44.45	Leonard Byrd (USA)	Belém
2003	44.33	Tyree Washington (USA)	Palo Alto
2004	44.00	Jeremy Wariner (USA)	Athens
2005	43.93	Jeremy Wariner (USA)	Helsinki
2006	43.62	Jeremy Wariner (USA)	Rome
2007	43.45	Jeremy Wariner (USA)	Osaka
2008	43.75	LaShawn Merritt (USA)	Beijing
2009	44.06	LaShawn Merritt (USA)	Berlin
2010	44.13	Jeremy Wariner (USA)	Zürich
2011	44.35	LaShawn Merritt (USA)	Daegu
2012	43.94	Kirani James (GRN)	London
2013	43.74	LaShawn Merritt (USA)	Moscow
2014	43.74	Kirani James (GRN)	Lausanne
2015	43.48	Wayde van Niekerk (RSA)	Beijing
2016	43.03	Wayde van Niekerk (RSA)	Rio de Janeiro
2017	43.62	Wayde van Niekerk (RSA)	Lausanne
2018	43.61	Michael Norman (USA)	Eugene
2019	43.45	Michael Norman (USA)	Torrance
2020	44.91	Justin Robinson (USA)	Marietta
2021	43.85	Randolph Ross (USA)	Eugene
2021	43.85	Steven Gardiner (BAH)	Tokyo
2022	43.56	Michael Norman (USA)	Eugene

Women

Year	Time	Athlete	Place
1966
1967
1968	52.03 A	Colette Besson (FRA)	Mexico City
1969	51.72	Nicole Duclos (FRA)	Athens
1970	51.02	Marilyn Neufville (JAM)	Edinburgh
1971	52.14	Helga Seidler (GDR)	Helsinki
1972	51.08	Monika Zehrt (GDR)	Munich
1973	51.27	Mona-Lisa Pursiainen (FIN)	Helsinki
1974	50.14	Riitta Salin (FIN)	Rome
1975	50.50	Irena Szewinska (POL)	Nice
1976	49.28	Irena Szewinska (POL)	Montreal
1977	49.52	Irena Szewinska (POL)	Düsseldorf
1978	48.94	Marita Koch (GDR)	Prague
1979	48.60	Marita Koch (GDR)	Potsdam
1980	48.88	Marita Koch (GDR)	Moscow
1981	48.61	Jarmila Kratochvílová (CZE)	Rome
1982	48.16	Marita Koch (GDR)	Athens
1983	47.99	Jarmila Kratochvílová (CZE)	Helsinki
1984	48.16	Marita Koch (GDR)	Prague
1985	47.60	Marita Koch (GDR)	Canberra
1986	48.22	Marita Koch (GDR)	Stuttgart
1987	49.38	Olga Bryzgina (URS)	Rome
1988	48.65	Olga Bryzgina (URS)	Seoul
1989	50.01	Ana Fidelia Quirot (CUB)	Duisburg
1990	49.50	Grit Breuer (GER)	Split
1991	49.32	Marie-José Pérec (FRA)	Frankfurt
1992	48.83	Marie-José Pérec (FRA)	Frankfurt
1993	49.81	Ma Yuqin (CHN)	Beijing
1994	49.77	Marie-José Pérec (FRA)	Paris
1995	49.28	Marie-José Pérec (FRA)	Gothenburg
1996	48.25	Marie-José Pérec (FRA)	Atlanta
1997	49.39	Cathy Freeman (AUS)	Oslo
1998	49.29	Charity Opara (NGR)	Rome
1999	49.62	Falilat Ogunkoya (NGR)	Lagos
2000	49.11	Cathy Freeman (AUS)	Sydney
2001	49.59	Katharine Merry (GBR)	Athens
2002	49.16	Ana Guevara (MEX)	Zürich
2003	48.89	Ana Guevara (MEX)	Saint-Denis
2004	49.07	Tonique Williams-Darling (BAH)	Berlin
2005	48.92	Sanya Richards-Ross (USA)	Zürich
2006	48.70	Sanya Richards-Ross (USA)	Athens
2007	49.27	Sanya Richards-Ross (USA)	Berlin
2007	49.27	Sanya Richards-Ross (USA)	Stuttgart
2008	49.62	Christine Ohuruogu (GBR)	Beijing
2009	48.83	Sanya Richards-Ross (USA)	Brussels
2010	49.64	Debbie Dunn (USA)	Des Moines
2011	49.35	Anastasiya Kapachinskaya (RUS)	Cheboksary
2012	49.16	Antonina Krivoshapka (RUS)	Cheboksary
2013	49.33	Amantle Montsho (BOT)	Monaco
2014	49.48	Francena McCorory (USA)	Sacramento
2015	49.26	Allyson Felix (USA)	Beijing
2016	49.44	Shaunae Miller (BAH)	Rio de Janeiro
2017	49.46	Shaunae Miller-Uibo (BAH)	Brussels
2018	48.97	Shaunae Miller-Uibo (BAH)	Monaco
2019	48.14	Salwa Eid Naser (BHR)	Doha
2020	50.42	Beatrice Masilingi (NAM)	Pretoria
2021	48.36	Shaunae Miller-Uibo (BAH)	Tokyo
2022	48.99	Marileidy Paulino (DOM)	Zürich

Notes and references

^ Canadian Journal of Applied Sport Sciences, "Aerobic versus anaerobic training for success in various athletic events" by Shepard, R. J., 1978
^ "Who is Oscar Pistorius ??? « Flightunit : News, Tips, Music, video, games & more". Archived from the original on 17 August 2012. Retrieved 2 September 2012.
^ "Men's outdoor 400 Metres". iaaf.org. IAAF. Retrieved 21 December 2018.
^ "Women's outdoor 400 Metres". iaaf.org. IAAF. Retrieved 21 December 2018.
^ "Senior Outdoor 400 Metres Men". World Athletics. Retrieved 12 June 2021.
^ "All-time men's best 400m". alltime-athletics.com. 8 January 2017. Retrieved 31 January 2017.
^ ^a ^b "Men's 400m Results" (PDF). Rio 2016 official website. 14 August 2016. Archived from the original (PDF) on 20 September 2016. Retrieved 15 August 2016.
^ "61st ANNUAL MT. SAC RELAYS". rtspt.com. RecordTiming. 20 April 2019. Retrieved 20 April 2019.
^ "400m Results" (PDF). IAAF. 4 October 2019. Retrieved 6 October 2019.
^ Karen Rosen (26 June 2022). "McLaughlin breaks world 400m hurdles record with 51.41 at US Championships". World Athletics. Retrieved 28 June 2022.
^ Cathal Dennehy (29 May 2022). "Norman reigns in fierce 400m clash with record run in Eugene". World Athletics. Retrieved 15 June 2022.
^ Roy Jordan (28 July 2019). "Kendricks tops 6.06m in Des Moines". IAAF. Retrieved 29 July 2019.
^ "400m Results". IAAF. 26 August 2015. Retrieved 26 August 2015.
^ Karen Rosen (26 June 2022). "McLaughlin breaks world 400m hurdles record with 51.41 at US Championships". World Athletics. Retrieved 28 June 2022.
^ "400m Results" (PDF). www.sep-olympic.ch. 5 July 2015. Archived from the original (PDF) on 14 July 2015. Retrieved 5 July 2015.
^ "400m". Archived from the original on 8 July 2014. Retrieved 3 July 2014.
^ Jess Whittington (12 June 2021). "Burrell breaks world U20 400m hurdles record in Eugene". World Athletics. Retrieved 29 June 2021.
^ ^a ^b "400m Men - Heats Results". IAAF. 23 August 2015. Retrieved 23 August 2015.
^ "Men's 400m Semifinal Results Summary" (PDF). olympics.com. 2 August 2021. Archived from the original (PDF) on 9 October 2021. Retrieved 17 August 2021.
^ Roy Jordan (9 June 2018). "Benjamin and Norman break collegiate records at NCAA Championships". IAAF. Retrieved 13 June 2018.
^ "400m Results" (PDF). sportresult.com. 6 July 2017. Retrieved 9 July 2017.
^ "Men's 400m Results".
^ "Toplists - All time Top lists - Senior Outdoor 400 Metres Women". World Athletics. Retrieved 17 April 2021.
^ "All-time women's best 400m". alltime-athletics.com. 26 November 2016. Retrieved 31 January 2017.
^ "400m Results" (PDF). IAAF. 3 October 2019. Retrieved 4 October 2019.
^ Jess Whittington; Jon Mulkeen (8 September 2022). "Amusan and Lyles break meeting records en route to Diamond League wins in Zurich". World Athletics. Retrieved 16 September 2022.
^ "400m Results". IAAF. 27 August 2015. Retrieved 27 August 2015.
^ Pavitt, Michael (26 November 2019). "CAS confirm bans against two Russian athletes over London 2012 retests". Inside the Games. Retrieved 12 April 2021.
^ "Toplists - All time Top lists - Senior Indoor 400 Metres Men". World Athletics. Retrieved 13 March 2021.
^ "400m Result" (PDF). Flash Results. 12 March 2022. Retrieved 14 March 2022.
^ ^a ^b "Results: Men 400 M (Finals)". Flash Results. 13 March 2021. Retrieved 13 March 2021.
^ ^a ^b "400m Results". flashresults.com. 9 March 2019. Retrieved 10 March 2019.
^ "400m Results" (PDF). World Athletics. 19 March 2022. Retrieved 19 March 2022.
^ "400m Result" (PDF). flashresults.com. 26 February 2022. Retrieved 27 February 2022.
^ "400m Final Results" (PDF). EAA. 2 March 2019. Archived from the original (PDF) on 23 March 2019. Retrieved 10 March 2019.
^ "400m Results" (PDF). World Athletics. 19 March 2022. Retrieved 19 March 2022.
^ "Senior Indoor 400 Metres Women". iaaf.org. IAAF. Retrieved 21 December 2018.
^ Taylor Dutch (14 February 2021). "Three American Records and 10 National Records Fall at the New Balance Indoor Grand Prix". runnersworld.com. Retrieved 23 February 2021.
^ "400m Result". atletiek.nu. 27 February 2022. Retrieved 27 February 2022.
^ Jon Mulkeen (7 February 2021). "Mu breaks world U20 indoor 400m record, Iapichino leaps 6.75m". World Athletics. Retrieved 7 February 2021.
^ "4x400 Metres Relay Icons". Retrieved 10 June 2018. Jeremy Wariner: The two-time world 400m champion was a key member of the USA 4x400m squad in the 2000s, picking up two Olympic relay golds and three world titles. He also boasts the second-fastest relay split in history with his 42.93 from the 2007 World Championships.
^ "Men's 4×400m Relay Results". ncaa.com. 27 May 2018. Retrieved 28 May 2018.
^ "Archived copy" (PDF). Archived from the original (PDF) on 20 September 2016. Retrieved 23 August 2016.{{cite web}}: CS1 maint: archived copy as title (link)

External links

[1] Canadian Journal of Applied Sport Sciences, "Aerobic versus anaerobic training for success in various athletic events" by Shepard, R. J., 1978

[2] "Who is Oscar Pistorius ??? « Flightunit : News, Tips, Music, video, games & more". Archived from the original on 17 August 2012. Retrieved 2 September 2012.

[3] "Men's outdoor 400 Metres". iaaf.org. IAAF. Retrieved 21 December 2018.

[4] "Women's outdoor 400 Metres". iaaf.org. IAAF. Retrieved 21 December 2018.

[5] "Senior Outdoor 400 Metres Men". World Athletics. Retrieved 12 June 2021.

[6] "All-time men's best 400m". alltime-athletics.com. 8 January 2017. Retrieved 31 January 2017.

[2016Rio-7] "Men's 400m Results" (PDF). Rio 2016 official website. 14 August 2016. Archived from the original (PDF) on 20 September 2016. Retrieved 15 August 2016.

[8] "61st ANNUAL MT. SAC RELAYS". rtspt.com. RecordTiming. 20 April 2019. Retrieved 20 April 2019.

[9] "400m Results" (PDF). IAAF. 4 October 2019. Retrieved 6 October 2019.

[10] Karen Rosen (26 June 2022). "McLaughlin breaks world 400m hurdles record with 51.41 at US Championships". World Athletics. Retrieved 28 June 2022.

[11] Cathal Dennehy (29 May 2022). "Norman reigns in fierce 400m clash with record run in Eugene". World Athletics. Retrieved 15 June 2022.

[12] Roy Jordan (28 July 2019). "Kendricks tops 6.06m in Des Moines". IAAF. Retrieved 29 July 2019.

[13] "400m Results". IAAF. 26 August 2015. Retrieved 26 August 2015.

[14] Karen Rosen (26 June 2022). "McLaughlin breaks world 400m hurdles record with 51.41 at US Championships". World Athletics. Retrieved 28 June 2022.

[15] "400m Results" (PDF). www.sep-olympic.ch. 5 July 2015. Archived from the original (PDF) on 14 July 2015. Retrieved 5 July 2015.

[16] "400m". Archived from the original on 8 July 2014. Retrieved 3 July 2014.

[17] Jess Whittington (12 June 2021). "Burrell breaks world U20 400m hurdles record in Eugene". World Athletics. Retrieved 29 June 2021.

[2015Beijing-18] "400m Men - Heats Results". IAAF. 23 August 2015. Retrieved 23 August 2015.

[19] "Men's 400m Semifinal Results Summary" (PDF). olympics.com. 2 August 2021. Archived from the original (PDF) on 9 October 2021. Retrieved 17 August 2021.

[20] Roy Jordan (9 June 2018). "Benjamin and Norman break collegiate records at NCAA Championships". IAAF. Retrieved 13 June 2018.

[21] "400m Results" (PDF). sportresult.com. 6 July 2017. Retrieved 9 July 2017.

[22] "Men's 400m Results".

[23] "Toplists - All time Top lists - Senior Outdoor 400 Metres Women". World Athletics. Retrieved 17 April 2021.

[24] "All-time women's best 400m". alltime-athletics.com. 26 November 2016. Retrieved 31 January 2017.

[WC2019-25] "400m Results" (PDF). IAAF. 3 October 2019. Retrieved 4 October 2019.

[26] Jess Whittington; Jon Mulkeen (8 September 2022). "Amusan and Lyles break meeting records en route to Diamond League wins in Zurich". World Athletics. Retrieved 16 September 2022.

[27] "400m Results". IAAF. 27 August 2015. Retrieved 27 August 2015.

[28] Pavitt, Michael (26 November 2019). "CAS confirm bans against two Russian athletes over London 2012 retests". Inside the Games. Retrieved 12 April 2021.

[29] "Toplists - All time Top lists - Senior Indoor 400 Metres Men". World Athletics. Retrieved 13 March 2021.

[30] "400m Result" (PDF). Flash Results. 12 March 2022. Retrieved 14 March 2022.

[2021_NCAA_Indoor-31] "Results: Men 400 M (Finals)". Flash Results. 13 March 2021. Retrieved 13 March 2021.

[400m_Results-32] "400m Results". flashresults.com. 9 March 2019. Retrieved 10 March 2019.

[33] "400m Results" (PDF). World Athletics. 19 March 2022. Retrieved 19 March 2022.

[34] "400m Result" (PDF). flashresults.com. 26 February 2022. Retrieved 27 February 2022.

[35] "400m Final Results" (PDF). EAA. 2 March 2019. Archived from the original (PDF) on 23 March 2019. Retrieved 10 March 2019.

[36] "400m Results" (PDF). World Athletics. 19 March 2022. Retrieved 19 March 2022.

[37] "Senior Indoor 400 Metres Women". iaaf.org. IAAF. Retrieved 21 December 2018.

[38] Taylor Dutch (14 February 2021). "Three American Records and 10 National Records Fall at the New Balance Indoor Grand Prix". runnersworld.com. Retrieved 23 February 2021.

[39] "400m Result". atletiek.nu. 27 February 2022. Retrieved 27 February 2022.

[40] Jon Mulkeen (7 February 2021). "Mu breaks world U20 indoor 400m record, Iapichino leaps 6.75m". World Athletics. Retrieved 7 February 2021.

[41] "4x400 Metres Relay Icons". Retrieved 10 June 2018. Jeremy Wariner: The two-time world 400m champion was a key member of the USA 4x400m squad in the 2000s, picking up two Olympic relay golds and three world titles. He also boasts the second-fastest relay split in history with his 42.93 from the 2007 World Championships.

[42] "Men's 4×400m Relay Results". ncaa.com. 27 May 2018. Retrieved 28 May 2018.

[43] "Archived copy" (PDF). Archived from the original (PDF) on 20 September 2016. Retrieved 23 August 2016.{{cite web}}: CS1 maint: archived copy as title (link)

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