2010 Isle of Man TT

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 Blue Riband event of the 2010 TT Race week the Senior TT run over a reduced race distance after the race was red-flagged on lap 3 after an incident at Ballagarey on the TT Course involving Guy Martin and caused a number of protective hay-bails to be set alight. The 2010 Isle of Man TT Races provided a clean-sweep of the solo motorcycle classes for Ian Hutchinson winning five Isle of Man TT races in a week, including the Senior TT race, the Superport and Superstock TT races, the six lap Superbike TT race and also winning the prestigious Joey Dunlop 2010 Isle of Man TT Championship. The previous record for four race wins in a week completed during the 1996 Isle of Man TT was held by Phillip McCallen. During the 2010 Isle of Man TT Races, Ian Hutchinson also completed a Junior/Senior double win and completed two Isle of Man TT race wins in one day, winning the Supersport TT Race 1 and the Superstock TT races for the second consecutive year.

The 2010 Sidecar TT Race 1 proved to be a first-time win for the former World Sidecar champion Klaus Klaffenböck and the first Austrian winner of an Isle of Man TT race since Rupert Hollaus won the 1954 Ultra-Lightweight TT held on the Clypse Course. The sidecar crew of Klaus Klaffenböck/Dan Sayle also won the 2010 Sidecar TT Race 1 and the 2010 Sidecar TT Championship. The closely contested 2010 TT Privateers Championship was won by James McBride.

Another first-time winner during the 2010 Isle of Man TT races was Mark Miller from the United States after winning the inaugural TT Zero race with a battery-powered, electric motor-driven MotoCzysz E1pc motorcycle and the first United States winner since Dave Roper won the 1984 Historic TT riding a 500 cc Matchless. The MotoCzysz E1pc was also the first American-manufactured motorcycle to win an Isle of Man TT Race since Oliver Godfrey won the 1911 Senior TT with an Indian V-Twin motorcycle.

During the 2010 Supersport TT Race 2, the New Zealand competitor Paul Dobbs crashed fatally at Ballagarey and the Austrian Martin Loicht died in an accident at Quarry Bends during the same race. The 2010 Post-TT Races held on the Billown Circuit, the solo motorcycle races were won by William Dunlop with a Hat-trick of wins in the 125 cc, 250 cc and 600 cc classes. The 400 cc and 650 cc Twins class were run concurrently with other races; both classes were won by Roy Richardson to give a double win at the 2010 Post-TT Races.

The 2010 Isle of Man TT formed the subject of the 2011 documentary TT3D: Closer to the Edge.