Ultramarathons in Michigan
As of October 6, 2026, Crewable lists 15 upcoming ultramarathons in Michigan from October 2026 to September 2027. The next is Anderson Lake Backyard Ultra on October 10 in Gwinn. Registration is open for 3.
Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites
Race calendar
October 2026
4 racesNovember 2026
2 racesJanuary 2027
2 racesMay 2027
2 racesJune 2027
1 raceJuly 2027
1 raceSeptember 2027
3 racesQuick answers
What is the next ultramarathon in Michigan?
Anderson Lake Backyard Ultra, on Saturday, October 10, 2026, in Gwinn. Distances: Backyard Ultra.
How many ultramarathons in Michigan have open registration?
3 of the 15 list registration as open as of October 6, 2026, including Anderson Lake Backyard Ultra, Wolverine State 100 and Heritage 50k & Half-Marathon.
What is the busiest month for ultramarathons in Michigan?
October 2026, with 4 of the 15. September 2027 follows with 3.
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