The AMA Supercross Championship is an American motorcycle racing series. Founded by the American Motorcyclist Association (AMA) in 1974, the AMA Supercross Championship races are held from January through early May. Supercross is a variant of motocross which involves off-road motorcycles on a constructed dirt track consisting of steep jumps and obstacles; the tracks are usually constructed inside a sports stadium. The easy accessibility and comfort of these stadium venues helped supercross surpass off-road motocross as a spectator attraction in the United States by the late 1970s.
The 2009 AMA National Speedway Championship Series
The 2010 AMA National Speedway Championship Series . The title was won by Billy Janniro, his second in total.
The 2014 AMA National Speedway Championship Series was staged over four rounds, which were held at Costa Mesa, Ventura, Industry and Auburn. Billy Janniro took the title, his fifth in total, winning all four rounds.
The 2013 AMA National Speedway Championship Series was staged over three rounds, which were held at Ventura, Victorville and Auburn. Billy Janniro took the title, his fourth in total, winning two of the rounds in the process.
The 2012 AMA National Speedway Championship Series was staged over a single round, which was held at Auburn on September 28. Billy Hamill took the title, his fifth in total, dropping just one point in his opening ride.
The 2011 AMA National Speedway Championship Series was staged over a single round, which was held at Auburn on September 30. Billy Janniro took the title, his third in total, scoring a maximum in the process.
The 2007 AMA National Speedway Championship Series was staged over three rounds, which were held at Costa Mesa, Auburn and Auburn. Billy Hamill took the title, his third in total, winning two of the rounds in the process.
The 2006 AMA National Speedway Championship Series was staged over three rounds, which were held at Costa Mesa, Auburn and Auburn. Greg Hancock won the title to equal Mike Bast's all-time record. It was also Hancock's fourth successive AMA title.
The 2008 AMA National Speedway Championship Series was staged over three rounds, which were held at Costa Mesa, Auburn and Auburn. Defending champion Billy Hamill only raced in the opening round. In his absence, Billy Janniro won the title for the first time, winning all three rounds in the process. It was the first time neither Greg Hancock or Billy Hamill had won the title since Mike Faria in 1997.
The 2005 AMA National Speedway Championship Series was staged over three rounds, which were held at Auburn, Industry Hills and Auburn. Greg Hancock won the title for a sixth time, and for the third time in succession.
The 2004 AMA National Speedway Championship Series was staged over three rounds, which were held at Auburn, Victorville and Auburn. Greg Hancock won the title for a fifth time, and for the second time in succession.
The 2003 AMA National Speedway Championship Series was staged over two rounds, which were both held at Auburn on July 25 and September 26. Greg Hancock won the title for the fourth time, his first since 2000.
The 2016 AMA National Speedway Championship Series was staged over four rounds, held at Costa Mesa, Ventura, Industry and Auburn. It was won by Billy Janniro, who beat Max Ruml and Dillon Ruml. It was the seventh title of Janniro's career, and his fourth in-a-row.
The 2015 AMA National Speedway Championship Series was staged over four rounds, which were held at Costa Mesa, Ventura, Industry and Auburn. Billy Janniro took the title, his sixth in total, winning two of the four rounds.
The 2017 AMA National Speedway Championship Series was staged over four rounds, held at Ventura, Santa Maria, Industry and Auburn. It was won by Billy Janniro, who beat Max Ruml and Broc Nicol. It was the eighth title of Janniro's career, and his fifth in-a-row.
The 2021 AMA National Speedway Championship Series was staged over two rounds, held at Owego, New York and Auburn, California. Three rounds were initially scheduled, however the first round at Greene, New York was cancelled due to poor track conditions. It was also the first championship since 2019, after the 2020 series was not held due to the Covid-19 pandemic.
The FIM Supercross World Championship is the premier championship for international stadium supercross racing. It is organized by the Fédération Internationale de Motocyclisme (FIM), the global governing body of motorcycle racing.
The 2022 AMA National Speedway Championship Series was staged over three rounds, held at Bakersfield, Industry Hills and Auburn, California.
The 2023 AMA National Speedway Championship Series was staged over three rounds, held at Bakersfield, Industry Hills and Auburn, California.
