Indy Japan 300
|Venue||Twin Ring Motegi|
|First IRL race||2003|
|Distance||304 miles (489 km)|
|Previous names||Fuji 200 (1966)
Budweiser 500k (1998)
Firestone Firehawk 500k (1999–2001)
Bridgestone Potenza 500k (2002)
Indy Japan 300 (2003-2010)
Indy Japan: The Final (2011)
The Indy Japan 300 presented by Bridgestone was an Indy Racing League IndyCar Series race held at Twin Ring Motegi in Motegi, Japan. The 2008 race marked the historic first ever win for a woman driver in American open wheel racing when Danica Patrick of Andretti-Green Racing took the checkered flag.
The first American open-wheel race in Japan was held in 1966 at Fuji Speedway. Jackie Stewart won the Fuji Japan 200, which was held as an exhibition race, and no championship points were awarded. USAC did not return.
For a short period in the late 1980s and early 1990s the CART series explored the prospects of holding a race in Japan. Possible locations would be either Suzuka, Fuji, or a street course in another city. The FIA objected, citing conflicts with Formula One and other interests. In addition, rules were put into place requiring that any CART race outside of North America be held on an oval. Despite the objections, in 1991 CART made their first trip across the Pacific Ocean, and held a street race at Surfer's Paradise, Australia. The plans for a race in Japan were scrapped.
In 1994, Honda joined the CART series, and by 1996, was widely successful. Interest in holding a race in Japan resurfaced, and upon the completion of the Twin Ring Motegi oval, a race was first held in 1998 without FIA objection. The race continued as a Champ Car event through 2002. In 2003, Honda switched alliances to the Indy Racing League, and the race became an Indycar Series event. On February 9, 2011, it was announced that the series would not return to Motegi for the 2012 season.
From 2003-2006, the race marked the final IRL race before the Indianapolis 500. The extended travel time required typically found the race held the weekend before or after Easter, leaving one or two weeks of travel and rest time until practice began at Indianapolis in early May. This situation was widely unpopular for fans, and for television, because it would leave a large gap in the schedule, and disrupt continuity leading to the series' premier event. In 2007, the race at Kansas Speedway was moved immediately after Motegi, and would serve as a more popular lead-in to the Indianapolis 500.
In 2008, following the open wheel unification, the race served as part of the unique "doubleheader" weekend with the Long Beach Grand Prix. Existing IRL-regular teams raced at Motegi, and former Champ Car teams raced at Long Beach. For 2009, in an effort to reorganize the IndyCar schedule, the race was moved to September on the Respect-for-the-Aged Day and autumnal equinox public holidays, also kept for 2010.
Following the 2011 earthquake and tsunami in Japan, it was announced that the 2011 event will be moved to the 2.98 mile road course (used by MotoGP) due to damage to the oval. The 2011 event will be the final running, a decision made before, and unrelated to, the earthquake/tsunami.
Past winners 
|Season||Date||Driver||Team||Chassis||Engine||Race Distance||Race Time||Average Speed
|USAC Championship Car history (Non-championship, Fuji)|
|1966||October 9||Jackie Stewart||Mecom Racing Team||Lola||Ford||80||216 (347.618)||2:03:59||104.525||report|
|CART Champ Car history|
|1998||March 28||Adrian Fernández||Patrick Racing||Reynard||Ford-Cosworth||201||311.349 (501.067)||1:57:12||159.393||report|
|1999||April 10||Adrian Fernández||Patrick Racing||Reynard||Ford-Cosworth||201||311.349 (501.067)||1:46:01||176.195||report|
|2000||May 13||Michael Andretti||Newman/Haas Racing||Lola||Ford-Cosworth||201||311.349 (501.067)||1:58:52||157.154||report|
|2001||May 19||Kenny Bräck||Team Rahal||Lola||Ford-Cosworth||201||311.349 (501.067)||1:44:48||178.113||report|
|2002||April 27||Bruno Junqueira||Chip Ganassi Racing||Lola||Toyota||201||311.349 (501.067)||2:00:05||155.447||report|
|IRL IndyCar Series history|
|2003||April 13||Scott Sharp||Kelley Racing||Dallara||Toyota||200||309.8 (498.574)||2:21:18||129.09||report|
|2004||April 16||Dan Wheldon||Andretti Green Racing||Dallara||Honda||200||309.8 (498.574)||1:49:48||166.114||report|
|2005||April 30||Dan Wheldon||Andretti Green Racing||Dallara||Honda||200||309.8 (498.574)||2:16:46||133.365||report|
|2006||April 22||Hélio Castroneves||Penske Racing||Dallara||Honda||200||309.8 (498.574)||1:59:01||153.248||report|
|2007||April 21||Tony Kanaan||Andretti Green Racing||Dallara||Honda||200||309.8 (498.574)||1:52:23||162.295||report|
|2008||April 20||Danica Patrick||Andretti Green Racing||Dallara||Honda||200||309.8 (498.574)||1:51:03||164.258||report|
|2009||September 19||Scott Dixon||Chip Ganassi Racing||Dallara||Honda||200||309.8 (498.574)||1:51:38||163.401||report|
|2010||September 18||Hélio Castroneves||Penske Racing||Dallara||Honda||200||309.8 (498.574)||2:04:04||147.008||report|
|2011||September 17||Scott Dixon||Chip Ganassi Racing||Dallara||Honda||63||187.929 (302.442)||1:56:41||96.635||report|
- Qualifying record: Dan Wheldon 201.165 mph (323.743 km/h), 2004
- Race record: Dan Wheldon 166.114 mph (267.334 km/h), 2004
- Note: Because of Open-Wheel Reunification in 2008, the 2008 Indy Japan 300 race was a half-field race. "Transitioning" teams at Long Beach raced for full IRL points despite using the former Champ Car codes.
See also 
Baltimore Grand Prix
IndyCar Series races
Kentucky Indy 300