Mackinac Island Races 2024 Schedule. The otillo swimrun mackinac island is on sunday august 25, 2024. The 2024 fort2fort five mile challenge will be held on saturday, may 11, 2024, beginning with the sound of the musket at 9:00 am.

End your summer with the mackinac 8 mile road race. Create your own trio of races featuring the fort2fort, the lilac festival race, the 8 mile and the great turtle.