May 16, 2015
The Lucas Oil Pro Motocross Championship visits Hangtown in Sacramento, Calif. on May 16, 2015.
May 17, 2015
The MotoGP World Championship visits the Le Mans Bugatti Circuit in Maine, France on May 17, 2015.
May 23, 2015
The Lucas Oil Pro Motocross Championship races at Glen Helen in San Bernardino, Calif. on May 23, 2015.
May 24, 2015
The AMA Pro Flat Track tour visits the Illinois State Fairground in Springfield, Ill., on May 24, 2015.
The eni FIM Superbike World Championship visits Donington Park in Donington, England on May 24, 2015.
May 29, 2015 – May 31, 2015
The MotoAmerica Road Racing Series visits Road America in Elkhart Lake, Wis. May 29-31, 2015.
May 30, 2015 – June 12, 2015
The annual running of the Isle of Man TT is scheduled for May 30-June 12, 2015 on the Isle of Man Mountain Course in Douglas, Isle of Man.
The stars of the AMA Pro Flat Track tour head to the Cal Expo Fairgrounds in Sacramento, Calif., on May 30, 2015.
The Lucas Oil Pro Motocross Championship races at Thunder Valley in Lakewood, Colo. on May 30, 2015.
May 31, 2015
The MotoGP World Championship visits the Mugello Circuit in Mugello, Italy on May 31, 2015.