Ultramarathons in Iowa
As of October 6, 2026, Crewable lists 14 upcoming ultramarathons in Iowa from October 2026 to September 2027. The next is Meyerhoff's Mayhem on October 16 in Cedar Falls. Registration is open for 1.
Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites
Race calendar
October 2026
3 racesNovember 2026
4 racesDecember 2026
1 raceMarch 2027
1 raceJune 2027
1 raceAugust 2027
1 raceSeptember 2027
3 racesQuick answers
What is the next ultramarathon in Iowa?
Meyerhoff's Mayhem, on Friday, October 16, 2026, in Cedar Falls. Distances: 48 hr.
How many ultramarathons in Iowa have open registration?
1 of the 14 list registration as open as of October 6, 2026, including Hitchcock Experience Endurance Runs.
What is the busiest month for ultramarathons in Iowa?
November 2026, with 4 of the 14. October 2026 follows with 3.
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