James Neilson (racing driver)

This list is of fatal accidents on the Snaefell Mountain Course during the Isle of Man TT and Manx Grand Prix races. The Snaefell Mountain Course was first used as a road-racing circuit for the 1908 Tourist Trophy event for racing automobiles, then-known as the Four Inch Course. For the 1911 TT motorcycle races the event was moved from the St. John's Short Course to the Four Inch Course by the Auto-Cycle Club and subsequently became known as the Snaefell Mountain Course or Mountain Course when used for motorcycle racing.

Victor Surridge was the first fatality on the Snaefell Mountain Course, after an accident at Glen Helen during practice for the 1911 TT. This was possibly the first death in the Isle of Man of a person in a motorcycle or road vehicle accident. The deadliest year for the Snaefell Mountain Course was 2005, when 11 people in total died during the two main racing events there. Four people (three riders and one marshal) died during that year's TT race period in June, and six riders and one spectator died during the Manx Grand Prix in August/September. The deadliest year for the TT period was 1970, when six people died during the event.

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Wikipedia