|Grand Prix motorcycle racing|
|Venue|| Mazda Raceway Laguna Seca (1988–1991, 1993–1994, 2005–2013) |
Daytona International Speedway (1964–1965)
|Most wins (rider)||Hugh Anderson, John Kocinski, Wayne Rainey, Casey Stoner, (3)|
|Most wins (manufacturer)||Honda (12)|
The United States motorcycle Grand Prix was a round of the FIM Grand Prix motorcycle racing World Championship.
The first United States Grand Prix was held in 1961 as a non-championship race at the Daytona International Speedway on the 2-mile or 3.2 kilometre long motorcycle course.  This continued until 1964 when it acquired an official spot on the World Championship calendar as the season opener. This marked the first time that Grand Prix motorcycle racing raced on the North American continent.    Spectator attendance for this race was low as there was little interest from the American public, who preferred the championship organized by the American Motorcyclist Association and as a result was not interested in the "European" style of racing.  In 1965 the U.S. Grand Prix returned for the second time at Daytona, but privateers were unable to pay for the trip to the United States and few Americans went to see the race due to the lack of interest in the majority European-styled championship.   As a result of the lack of interest from the American public, top teams and riders, the United States Grand Prix was removed from the 1966 season.
After a 23-year absence, the U.S. Grand Prix returned for the 1988 season on the Laguna Seca Raceway.  That year's event was marred with problems as many especially European riders complained about the bumpyness of an old part of the track and the dangerously close barriers and concrete blocs that surrounded the circuit. Some European riders even considered to not participate in the race on Sunday while the American riders had no problems with the circuit as they had more experience. The 1989 season didn't fare much better as the organization was once again poor - there were problems with the prize- and start money, tickets and timekeeping. Against the rules some sold tickets in front of the riders' quarter's, the prize money was unusual, the supply roads were insufficient and kept getting altered and the timekeeping produced useful times only after 18 hours.  On top of that, the American organizers wanted to include a sidecar race in their program but refused to pay the extra travel expenses. While last year's bumpy section had been reprofiled for 1989, riders still complained it was dangerous - especially Turns 11, 1 and 2.  During the race, an ambulance drove on the track in dangerous manner to assist the crashed out Wayne Gardner who had broken his leg after a heavy shunt exiting Turn 5, with no yellow flags being shown to the riders. On the cooldown lap a bizarre incident occurred: American Bubba Shobert hit the back of Kevin Magee's bike at high speed after he failed to see the Australian.  Magee had stopped in the middle of the track behind a blind hill after he ran out of fuel to do a rear-wheel burnout, but Shobert was not looking forward as he was congratulating Eddie Lawson, who himself narrowly missed Magee. As Shobert lay motionless in the sand, a visibly distraught Lawson tried to help him. The American was brought to the hospital with severe head injuries and Magee was also recovered with a broken ankle and lower leg. Shobert would never race again after this incident while Magee was forced to miss both the Spanish and Italian rounds that year.   In 1990 the track of the U.S. Grand Prix had undergone various upgrades but riders still complained some points were dangerous.  On lap two, Magee suffered a heavy accident whilst being in the top positions, his second in two years at this circuit. The race had to be red flagged to allow an ambulance to enter the circuit, where the Australian was taken to the hospital with severe head trauma. There he was operated and a blood clot in his brain was surgically removed, after which he was kept in an artificial coma for some time.   The accident meant he was out of the 1990 season. In 1992 the United States GP was taken off the calendar in favour of other venues preferred by Bernie Ecclestone, who was increasingly involved in Grand Prix motorcycle racing at the time.  For the 1993 season however the event returned for two more years as Ecclestone focused more on Formula 1 again.  In 1995 the race was scheduled to be held on August 6, but was eventually scrapped due to financial problems and complaints from riders about the dangerous circuit.  
After a ten year hiatus, the event was brought back for the third time in 2005 on the same circuit as before - Laguna Seca. The track had undergone the needed updates and safety requirements and was now considered to be safe enough to host a U.S. Grand Prix again.  Due to a Californian law on air pollution, only the 4-stroke MotoGP bikes were allowed to participate. The race was famously won by home hero Nicky Hayden.   In 2006 Hayden once again won his home race.   The 2008 United States Grand Prix saw a thrilling battle between Valentino Rossi and Casey Stoner, the race being won by the Italian in the end.    In 2014, the United States could only support two events (the Indianapolis Grand Prix and Motorcycle Grand Prix of the Americas were also scheduled at this time) and the organizers, as a not-for-profit, could no longer compete with either circuits. As a result, they couldn't keep up with Dorna's ever increasing financial demands and Laguna Seca was taken off the calendar despite having a contract for that year.  
During the last existence of the U.S. Grand Prix, two other races co-existed with each other for one season in 2013 - the Indianapolis Grand Prix and the Grand Prix of the Americas. The first Grand Prix existed from 2008 until 2015 and the second one still is held today, only being cancelled in 2020 after the outbreak of the COVID-19 pandemic.
2005: 57,932 
A pink background indicates an event that was not part of the Grand Prix motorcycle racing championship.
|3||Hugh Anderson||125 cc||1964, 1965|
|Wayne Rainey||500 cc||1989, 1990, 1991|
|John Kocinski||500 cc||1993|
|250 cc||1989, 1990|
|Casey Stoner||MotoGP||2007, 2011, 2012|
|2||Mike Hailwood||500 cc||1964, 1965|
|Luca Cadalora||500 cc||1994|
|Nicky Hayden||MotoGP||2005, 2006|
|12||Honda||MotoGP||2005, 2006, 2009, 2011, 2012, 2013|
|250 cc||1988, 1991, 1993, 1994|
|125 cc||1993, 1994|
|500 cc||1988, 1989, 1990, 1991, 1994|
|250 cc||1965, 1989, 1990|
|4||Suzuki||125 cc||1964, 1965|
|50 cc||1964, 1965|
|2||MV Agusta||500 cc||1964, 1965|
|2013||Laguna Seca||Marc Márquez||Honda||Report|
|2011||Laguna Seca||Casey Stoner||Honda||Report|
|Year||Track||125 cc||250 cc||MotoGP||Report|
|2009||Laguna Seca||Dani Pedrosa||Honda||Report|
|Year||Track||125 cc||250 cc||500 cc||Report|
|1994||Laguna Seca||Takeshi Tsujimura||Honda||Doriano Romboni||Honda||Luca Cadalora||Yamaha||Report|
|1993||Dirk Raudies||Honda||Loris Capirossi||Honda||John Kocinski||Cagiva||Report|
|1991||Luca Cadalora||Honda||Wayne Rainey||Yamaha||Report|
|1990||John Kocinski||Yamaha||Wayne Rainey||Yamaha||Report|
|Year||Track||80 cc||125 cc||250 cc||500 cc||Report|
|1989||Laguna Seca||John Kocinski||Yamaha||Wayne Rainey||Yamaha||Report|
|1988||Jim Filice||Honda||Eddie Lawson||Yamaha||Report|
|Year||Track||50 cc||125 cc||250 cc||350 cc||500 cc||Report|
|1965||Daytona||Ernst Degner||Suzuki||Hugh Anderson||Suzuki||Phil Read||Yamaha||Mike Hailwood||MV Agusta||Report|
|1964||Hugh Anderson||Suzuki||Hugh Anderson||Suzuki||Alan Shepherd||MZ||Mike Hailwood||MV Agusta||Report|
|1963 ||Mitsuo Itoh||Suzuki||Ernst Degner||Suzuki||Fumio Ito||Yamaha||Don Vesco||Yamaha||Report|
|1962 ||Kunimitsu Takahashi||Honda||Kunimitsu Takahashi||Honda||Jess Thomas||Motobi||Kunimitsu Takahashi||Honda||Report|
|Year||Track||125 cc||250 cc||350 cc||500 cc||Report|
|1961 ||Daytona||Moto Kitano||Honda||Tony Godfrey||Matchless||Report|
The Malaysian motorcycle Grand Prix is a round of the FIM Grand Prix motorcycle racing World Championship. The event is due to take place at the Sepang International Circuit until at least 2024.
The Portuguese motorcycle Grand Prix is a motorcycling road racing event that is part of the Grand Prix motorcycle racing World Championship.
The 1988 United States motorcycle Grand Prix was the second round of the 1988 Grand Prix motorcycle racing season. It took place on the weekend of April 8–10, 1988, at the Laguna Seca Raceway.
The 1988 German motorcycle Grand Prix was the sixth round of the 1988 Grand Prix motorcycle racing season. It took place on the weekend of 27–29 May 1988 at the Nürburgring circuit.
The 1988 Yugoslavian motorcycle Grand Prix was the tenth round of the 1988 Grand Prix motorcycle racing season. It took place on the weekend of 15–17 July 1988 at the Rijeka circuit.
The 1988 Swedish motorcycle Grand Prix was the thirteenth round of the 1988 Grand Prix motorcycle racing season. It took place on the weekend of 12–14 August 1988 at the Anderstorp circuit.
The 1989 United States motorcycle Grand Prix was the third round of the 1989 Grand Prix motorcycle racing season. It took place on the weekend of April 14–16, 1989 at Laguna Seca.
The 1989 Yugoslavian motorcycle Grand Prix was the eighth round of the 1989 Grand Prix motorcycle racing season. It took place on the weekend of 9–11 June 1989 at the Automotodrom Grobnik circuit, near Rijeka.
The 1989 Dutch TT was the ninth round of the 1989 Grand Prix motorcycle racing season. It took place on the weekend of 22–24 June 1989 at the TT Circuit Assen located in Assen, Netherlands.
The 1989 French motorcycle Grand Prix was the eleventh round of the 1989 Grand Prix motorcycle racing season. It took place on the weekend of 14–16 July 1989 at the Bugatti Circuit located in Le Mans.
The 1990 United States motorcycle Grand Prix was the second round of the 1990 Grand Prix motorcycle racing season. It took place on the weekend of April 6–8, 1990 at Laguna Seca.
The 1992 Japanese motorcycle Grand Prix was the first round of the 1992 Grand Prix motorcycle racing season. It took place on the weekend of 27–29 March 1992 at the Suzuka Circuit.
The 1993 United States motorcycle Grand Prix was the penultimate round of the 1993 Grand Prix motorcycle racing season. It took place on September 12, 1993, at Laguna Seca.
The South African motorcycle Grand Prix was a motorcycling event that had been part of the Grand Prix motorcycle racing world championship, held intermittently from 1983 to 2004.
The Austrian motorcycle Grand Prix is a motorcycling event that was part of the Grand Prix motorcycle racing season from 1971 to 1997, and then again from 2016 onwards. The event is due to take place at the Red Bull Ring until at least 2025.
The Belgian motorcycle Grand Prix is a motorcycling event that was part of the Grand Prix motorcycle racing season from 1949 to 1990.
The 1994 United States motorcycle Grand Prix was the twelfth round of the 1994 Grand Prix motorcycle racing season. It took place on September 11, 1994, at the Laguna Seca Raceway. This round was the last motorcycle Grand Prix hosted by the United States until 2005.
The 1999 French motorcycle Grand Prix was the fourth round of the 1999 Grand Prix motorcycle racing season. It took place on 23 May 1999 at Le Castellet.
The 2011 United States motorcycle Grand Prix was the tenth round of the 2011 Grand Prix motorcycle racing season. It took place on the weekend of July 22–24, 2011 at Laguna Seca. As in previous years, only the MotoGP class raced at Laguna Seca, with the domestic Superbike, Sportbike, and Supersport championships joining the MotoGP class instead of the Moto2 and 125cc classes.
The 1983 French motorcycle Grand Prix was the second round of the 1983 Grand Prix motorcycle racing season. It took place on the weekend of 2–3 April 1983 at the Bugatti Circuit in Le Mans.