High Quality Content by WIKIPEDIA articles! 2012 Isle of Man TT were held between Saturday 26 May and Saturday 9 June 2012 on the 37.733-mile Mountain Course in the Isle of Man. The 2012 Isle of Man TT Festival also included the Pre-TT Classic Races on the 25, 26 & 28 May 2012 and the Post-TT Races on 9 June 2012 and both events held on the Billown Circuit.