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.
Jeffrey Ward is a British-American former professional motocross racer, auto racing driver and off-road racer. He won the AMA Motocross Championship five times and the AMA Supercross Championship twice and the Motocross des Nations seven times. After retiring from motorcycle competition, Ward turned to auto racing, finishing in second place at the Indianapolis 500 and winning a race at the Texas Motor Speedway. He then competed in off-road truck racing and rallycross. Ward was inducted into the Motorcycle Hall of Fame in 1999 and, was inducted into the Motorsports Hall of Fame of America on 12 August 2006.
Jake Zemke is an American former professional motorcycle road racer of partial Japanese ancestry. He turned pro in 1992. Zemke's race number has been 98 for most of his racing career. He started his own riding school called Zemke Riding Development.
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 United States national speedway team are an international motorcycle speedway team governed by the American Motorcyclist Association. They compete in the major international speedway competitions, including the Speedway World Cup and Speedway of Nations and the former events the Speedway World Team Cup and the Speedway World Pairs Championship.
Billy Mitchell Janniro is a former motorcycle speedway rider from the United States. He earned 11 caps for the United States national speedway team.
The Indianapolis motorcycle Grand Prix was a motorcycling event held on the combined road course at the Indianapolis Motor Speedway in Speedway, Indiana. From 2008 to 2015, it was held as part of the Grand Prix motorcycle racing season (MotoGP). The event was revived in 2020 with MotoAmerica.
James Lloyd Elder, known as Sprouts Elder was an international motorcycle speedway rider. Elder is considered the father of American broadsliding.
The 2009 AMA National Speedway Championship Series
Eddie Castro, known as 'Fast Eddie', is a former Speedway rider who has raced regularly in the AMA National Speedway Championship, finishing fourth in 2002 and sixth in the 2010 competition.
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 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 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 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.
Harry Bradley Oxley is a former speedway rider from the United States. He earned 12 caps for the United States national speedway team.
Maxwell Ruml is a Motorcycle speedway rider from the United States.
The 2022 AMA National Speedway Championship Series was staged over three rounds, held at Bakersfield, Industry Hills and Auburn, California.
Giovanni Manzares is a speedway rider from the United States.
