List of Isle of Man TT Mountain Course fatalities
Wikimedia list article

This list is of fatal crashes on the Isle of Man TT Mountain Course used for the Isle of Man TT races, Manx Grand Prix and Classic TT races. The TT Course was first used as an automobile road-racing circuit for the 1908 Tourist Trophy event for racing automobiles, then known as the Four Inch Course. For the 1911 Isle of Man TT race motor-cycle races, the event was moved from the St John's Short Course to the Four Inch Course by the UK Auto-Cycle Club, and became known as the Isle of Man TT Mountain Course, or TT Course, when used for motorcycle racing.
Victor Surridge was the first fatality on the Isle of Man TT Mountain Course, after a crash at Glen Helen during practice for the 1911 Isle of Man TT races. This was possibly the first death in the Isle of Man in a motorcycle or road vehicle crash.
The deadliest year was 2005, when 11 people died: three riders and one marshal died during the June race, and six riders and one course bystander died during the Manx Grand Prix in August/September 2005. Since 1937, the only season where the major races were held in both events and ended without a fatality in either the TT or the Manx Grand Prix was in 1982. The 2012 and 2024 TTs, which are raced by more experienced professional riders, ended without fatalities, but there were fatalities in the Manx Grand Prix, which is raced with amateur riders except for the vintage motorcycle classes that experienced professionals may participate in. The 2025 TT and Manx Grand Prix races had no fatalities, but the blue riband Senior TT and the Manx Senior Classic and Formula 1 classic events were cancelled by weather.
Racing deaths
Motorcycles and sidecars
Motor racing (other)
Other deaths
Race officials
Competition
Non competition
Parade laps
Unofficial competition testing
Spectators
Competition
Non competition
By nationality
Sources
See also
Isle of Man TT Races
Manx Grand Prix
North West 200
Ulster Grand Prix
Clypse Course
St.
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