The 2012 Isle of Man TT Festival also included the Pre-TT Classic Races on 25, 26 & 28 May 2012 and the Post-TT Races on 9 June 2012 and both events held on the Billown Circuit.

[2] After a year's sabbatical, the Isle of Man sidecar TT competitor Dave Molyneux returned to racing at the Isle of Man TT to win both Sidecar TT Races 1 & 2 in convincing style.

The New Zealander, Bruce Anstey repeated his 2011 success and again won the 600cc Supersport TT Race 1.

The third running of the TT Zero was again won by Michael Rutter riding the electric powered MotoCzysz motor-cycle and also breaking the prestigious 100 mph barrier with a lap at an average race speed of 104.056 mph.

The rescheduled Senior TT race was later cancelled for the first time in the history of the event due to further problems with low cloud and rain showers on the section of the TT Course from the Mountain Mile to the 32nd Milestone.

[14] 9 June 2012 3 Laps (113.00 Miles) * Reduced Race Distance - TT Mountain Course.