Mahan broke into professional rodeo at the age of 14. He won the title of World All-Around Rodeo Champion for five consecutive years from 1966 to 1970, and a sixth time in 1973. His 1973 comeback and competition with Phil Lyne was the subject of the documentary The Great American Cowboy, which won the 1973 Academy Award for Documentary Feature.
His consecutive all-around record was not surpassed until 1994 by Ty Murray, and his six total all-around victory was not surpassed until 1998, also by Murray. Mahan was also the World Bull Riding Champion in 1965 and 1967.
1966 - Inducted into the National Cowboy and Western Heritage Museum's Rodeo Hall of Fame.
1979 - Inducted into the Pro Rodeo Hall of Fame
1985 - Inducted into the Oregon Sports Hall of Fame in 1985.
2007 - Inducted into The Texas Cowboy Hall of Fame.
2010 - Recipient of the PRCA Legend of ProRodeo.
2015 - Inducted into the Class of 2015 Bull Riding Hall of Fame
Western Wear Entrepreneur
After he retired from rodeo 1977, he had already established the Larry Mahan Boot Collection, as well as a clothing line. He also licensed his name to various entities including Tony Lama, Gensco and others. Larry Mahan's Hat Collection has been available from the Milano Hat Company since 1984. 
Songs / Singer / Songwriting
In 1976, he released an album on Warner Brothers (BS 2959) entitled Larry Mahan, King of the Rodeo. The songs on the album are:
- Freckled Face and Pretty Ribbons
- There's More to a Cowboy
- Stunt Man
- King of the Rodeo
- Larry's Salty Dog Blues
- Mom's Silver Dollar Saloon
- Up Jumped the Devil
- Rosie's Palace of Pure Love and Fingertip Massage
- Smokey Mountain Cowboy
- Ha Ha
In 1972, Mahan had a small part in the Cliff Robertson movie, J.W. Coop. In 1975, he appeared in Six Pack Annie. In the 2007 movie No Country for Old Men, Josh Brolin's character buys and wears a pair of "Larrys".
Larry Mahan hosted of RFD TV's Equestrian Nation up until 2009. 
- "Larry Mahan biography". Retrieved April 20, 2011.
- "Inductees". Professional Rodeo Hall of Fame. Retrieved May 30, 2007.
- "Larry Mahan". LarryMahan.com. Archived from the original on January 27, 2007. Retrieved May 30, 2007.
- "Rodeo Inductees and Honorees". National Cowboy and Western Heritage Museum. Archived from Rodeo Hall of Fame the original Check
|url=value (help) on May 29, 2007. Retrieved May 30, 2007.
- "Hall of Fame Roll of Honor Members". Oregon Sports Hall of Fame and Museum. Archived from the original on August 1, 2013. Retrieved February 23, 2010.
- "Texas Cowboy Hall of Fame | Fort Worth Texas". texascowboyhalloffame.org. Retrieved 28 January 2017.
- "Legends of ProRodeo - Pro Rodeo Hall of Fame". Pro Rodeo Hall of Fame. Retrieved 28 January 2017.
- "The Bull Riders - Class of 2015". The Bull Riding Hall of Fame. Retrieved 18 January 2017.
- "Ramblin' Jack and Mahan". CowboyLyrics.com. Retrieved May 30, 2007.
- IMDB quotes
- No country for old men page 85