The Isle of Man TT races: a beginner's guide. Race dates are May 27th - June 7th 2013. TT refers to the original title of the race- Tourist time trial. The race is held on public roads with riders reaching up to 190 mph. on the roughly 37 mile course with six laps covered in just over an hour. The riders are definitely gutsy folk trusting their machines. Look up some video of this crazy fast and technical road course.