3 aid
Trail Races & Ultramarathons in Iowa
As of October 6, 2026, Crewable lists 19 upcoming trail races and ultramarathons in Iowa from October 2026 to September 2027. The next is Mayor's Run for the Trails 5K + Kids Fun Run on October 10 in Johnston. Registration is open for 4. One advertises prize money.
Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites
With aid station data
2 aid
5 aid2 aid
Race calendar
October 2026
5 racesNovember 2026
6 racesDecember 2026
1 raceMarch 2027
1 raceJune 2027
2 racesHawkeye 200
Marshalltown, IA
August 2027
1 raceSeptember 2027
3 racesQuick answers
What is the next trail race or ultramarathon in Iowa?
Mayor's Run for the Trails 5K + Kids Fun Run, on Saturday, October 10, 2026, in Johnston. Distances: 5K.
How many trail races and ultramarathons in Iowa have open registration?
4 of the 19 list registration as open as of October 6, 2026, including Mayor's Run for the Trails 5K + Kids Fun Run, Angry Cow Trail Run # 4 Vets Run and Iowa Trail Run Series: Whiterock.
Which trail races and ultramarathons in Iowa offer prize money?
One race advertises prize money.
How many of the trail races in Iowa are ultramarathons?
14 of the 19 are ultramarathons (longer than a marathon, or a backyard, timed or 200+ mile format). The other 5 are shorter races.
What is the busiest month for trail races and ultramarathons in Iowa?
November 2026, with 6 of the 19. October 2026 follows with 5.
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