100 Mile Races in Michigan
As of October 6, 2026, Crewable lists 5 upcoming 100 mile races in Michigan from October 2026 to September 2027. The next is Anderson Lake Backyard Ultra on October 10 in Gwinn. Registration is open for 2.
Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites
Race calendar
October 2026
2 racesMay 2027
1 raceJune 2027
1 raceSeptember 2027
1 raceQuick answers
What is the next 100 mile race in Michigan?
Anderson Lake Backyard Ultra, on Saturday, October 10, 2026, in Gwinn. Distances: Backyard Ultra.
How many 100 mile races in Michigan have open registration?
2 of the 5 list registration as open as of October 6, 2026, including Anderson Lake Backyard Ultra and Wolverine State 100.
What is the busiest month for 100 mile races in Michigan?
October 2026, with 2 of the 5. May 2027 follows with 1.
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