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.
Richard Joseph Carmichael is an American former professional motocross and stock car racing driver. He competed in the AMA Motocross Championships from 1997 to 2007 and in NASCAR from 2008 to 2011. His unrivaled successes in the sport of motocross earned him the nickname "The GOAT"; standing for Greatest of All Time. He won 15 AMA championships (1st), 10 in Motocross (1st), five in Supercross (2nd); scored 150 wins (1st), 102 in Motocross (1st), 48 in Supercross (4th); had two perfect Motocross seasons; was never beaten in 125 Supercross; and was a five-time winner of the AMA's Rider of the Year award.
Gregory Alan Hancock is a former professional motorcycle speedway rider from the United States. As of 2023, he was one of only six riders to have won the individual World Championship four or more times.
William Gordon Hamill is an American international motorcycle speedway rider. He is a former Speedway World Champion, winning the title in 1996 and earned 29 caps for the United States national speedway team.
John Walter Milne was an international speedway rider. He became the first American to win a motorcycling world championship when he won the Speedway World Championship in 1937. Milne finished as runner-up in the World Championship in 1938.
The World Championship of Speedway is an international competition between the highest-ranked motorcycle speedway riders of the world, run under the auspices of the Fédération Internationale de Motocyclisme (FIM). The first official championships were held in 1936.
Costa Mesa Speedway in Costa Mesa, California, US, is a major motorsports venue credited with the renaissance of motorcycle speedway racing in Southern California. The 185 yards long track hosts both Solo and Sidecar speedway.
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 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 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 2002 AMA National Speedway Championship Series was staged over three rounds, which were held at San Bernardino, Auburn and Auburn. Billy Hamill successfully retained the title.
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 United States Speedway National Championship is an annual speedway championship to decide one of the two national champions of the United States. The Championship has always been staged at Costa Mesa Speedway and dates back to 1969. Since 1998 when Costa Mesa promoters split from the AMA, the competition has run completely separately from the AMA National Speedway Championship. It is not affiliated to the FIM.
The 2023 AMA National Speedway Championship Series was staged over three rounds, held at Bakersfield, Industry Hills and Auburn, California.
