The Isle of Man TT or Tourist Trophy races are an annual motorcycle racing event run on the Isle of Man in May and June of most years since its inaugural race in 1907. The event begins on the UK Spring Bank Holiday at the end of May and runs for thirteen days. It is often called one of the most dangerous racing events in the world as many competitors have died.
The Manx Grand Prix motorcycle races are held on the Isle of Man TT Course annually, usually at the end of August and early September. Traditionally the event has been staged over a two week period but this was reduced in 2022 to nine days. 2023 saw the 100th Anniversary of the event.
The Isle of Man TT Mountain Course or TT Course or Snaefell Mountain Course or Elmo’s Mountain Course is a street and public rural road circuit located in the Isle of Man, used for motorcycle racing. The motorcycle TT Course is used principally for the Isle of Man TT Races and also the separate event of the Isle of Man Festival of Motorcycling for the Manx Grand Prix and Classic TT Races held in September of each year. The start-line for the Isle of Man TT Mountain Course is located on Glencrutchery Road in the City of Douglas, Isle of Man.
The Senior Tourist Trophy is a motorcycle road race that takes place during the Isle of Man TT festival, an annual event traditionally held over the last week in May and the first week in June. The Senior TT is the blue ribbon event of the festival that takes place on the Saturday of race week, with "The Marquis de Mouzilly St. Mars trophy" awarded to the winner.
The 1957 Isle of Man Tourist Trophy was the Golden Jubilee event and the second race in the 1957 Motorcycle World Championships.
Further changes occurred in the 1926 Isle of Man Tourist Trophy with the scrapping of the Side-Car TT and Ultra-Lightweight TT Races from the lack of entries. Most of the TT Course had now been tarmacked, including the Snaefell Mountain Section. Another change in 1926 was the ban on alcohol based fuels, forcing competitors to use road petrol. Despite these changes the prestige of the Isle of Man TT Races had encouraged the Italian motor-cycle manufacturers Bianchi, Garelli and Moto Guzzi to enter.
The Clypse Course describes a motor-cycle racing course used for the Isle of Man TT Races between 1954 and 1959.
The Supertwin TT is a motorcycle road race that is a part of the Isle of Man TT festival - an annual motorcycle event traditionally held over the last week of May and first week of June. Prior to the 2022 edition of the TT, the race was known as the Lightweight TT.
The 1954 Isle of Man Tourist Trophy was the second race in the 1954 Grand Prix motorcycle racing season and proved highly controversial for TT Course and race changes. The 1954 Junior TT was the first race where the official race distance was reduced from 7 laps to 5 laps. The 1954 Senior TT Race was stopped at half distance due to the weather conditions on the Mountain Section of the course.
The Sidecar TT is a motorcycle-with-sidecar road race competition held over two legs which takes place during the Isle of Man TT festival, an annual event at the end of May and beginning of June. Between 1954 and 1976 this race was part of the Grand Prix motorcycle racing world championship.
The Verandah, Isle of Man is a series of four bends which motorcyclists negotiate at high speed during road racing on the Snaefell Mountain Course on the Isle of Man.
2008 Isle of Man TT Festival was held between Saturday 24 May and Saturday 7 June on the 37.733-mile Snaefell Mountain Course and was the 89th Isle of Man TT Race. After the 2007 Centenary TT Races, the 2008 event included a second 600cc Supersport Junior TT race and the re-introduction of two-stroke motor-cycle racing with a Lightweight TT and Ultra-Lightweight TT race on the Billown Circuit in the Isle of Man.
The Billown Circuit is a motorcycle road-race course used for the Southern 100, the Pre-TT Classic races and the National Road Races meetings near Castletown on the Isle of Man. Racing is held on public roads closed for racing by an Act of Tynwald, the parliament of the Isle of Man.
The 2009 Isle of Man TT Festival was held between Saturday 30 May and Friday 12 June on the 37.733-mile (60.725 km) Mountain Course. The 2009 TT races again include a second 600 cc Supersport Junior TT race and the Lightweight TT and Ultra-Lightweight TT races held on the 4.25-mile (6.84 km) Billown Circuit in the Isle of Man. A new event for the 2009 Isle of Man TT races was the one-lap TTXGP for racing motorcycles "to be powered without the use of carbon based fuels and have zero toxic/noxious emissions."
The 2009 Manx Grand Prix was held between Saturday 22 August and Friday 4 September 2009 on the 37.733-mile Mountain Course.
The 2010 Isle of Man TT Festival was held between Saturday 29 May and Friday 11 June on the 37.73-mile Isle of Man TT Mountain Course. The 2010 races again included a second 600 cc Supersport Junior TT race. The Lightweight TT and Ultra-Lightweight TT race class previously held on the 4.25-mile (6.84 km) Billown Circuit in the Isle of Man for the 2008 Isle of Man TT and 2009 Isle of Man TT were dropped from the 2010 race schedule. The 2010 Isle of Man TT Races included the one-lap TT Zero for racing motorcycles "to be powered without the use of carbon based fuels and have zero toxic/noxious emissions." which replaced the TTXGP and also a Suzuki 50th Anniversary Lap of Honour and the TT Classic Parade which were held before the main Senior TT race.
The 2010 Manx Grand Prix races were held between Saturday 21 August and Friday 3 September 2010 on the 37.733-mile Mountain Course.
The 2014 Isle of Man TT Festival was held between Saturday 24 May and Friday 6 June 2014 on the 37.73-mile Isle of Man TT Mountain Course. The main races were six solo motorcycle races and two sidecar races. The festival also included Pre-TT Classic Races held on 23, 24 & 26 May 2014 at the Billown Circuit in Castletown. Post-TT races scheduled for 7 June 2014 were cancelled by race organisers on safety grounds due to a thunderstorm and heavy overnight rain.
The Isle of Man TT and other motorcycle racing in the island did not restart after the end of the First World War until 1920. Changes were made to the Snaefell Mountain Course causing competitors to turn left and proceed up the hill at Cronk-ny-Mona to follow the primary A18 Snaefell Mountain Road through to Governor's Bridge with a new start/finish line at Glencrutchery Road lengthening the course to 37¾ miles.
Ernst Degner 
Mitsuo Itoh 
Hugh Anderson 
Luigi Taveri 
Ralph Bryans 
Stuart Graham 
Barry Smith 