The 2013 Isle of Man TT Races were held between the Saturday 25 May and Friday 7 June 2013 on the 37.73-mile Isle of Man TT Mountain Course in the Isle of Man. The event celebrated the 90th anniversary of the first Sidecar TT with a special parade lap for racing sidecar outfits. The 2013 Isle of Man TT Festival also included the Pre-TT Classic Races on 24, 25 & 27 May 2013 and the Post-TT Races on 8 June 2013 and both events held on the Billown Circuit.