Trail Races & Ultramarathons in Montana
As of October 6, 2026, Crewable lists 6 upcoming trail races and ultramarathons in Montana from October 2026 to September 2027. The next is 7th Annual Tammany Trot 5K & 1-Mile Fun Run on October 10 in Hamilton. Registration is open for 3.
Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites
Race calendar
October 2026
3 racesJune 2027
2 racesSeptember 2027
1 raceQuick answers
What is the next trail race or ultramarathon in Montana?
7th Annual Tammany Trot 5K & 1-Mile Fun Run, on Saturday, October 10, 2026, in Hamilton. Distances: 5K, 1 mi.
How many trail races and ultramarathons in Montana have open registration?
3 of the 6 list registration as open as of October 6, 2026, including 7th Annual Tammany Trot 5K & 1-Mile Fun Run, Le Grizz Ultramarathon & Relay and CITY TO SKY TRAIL RACES.
How many of the trail races in Montana are ultramarathons?
5 of the 6 are ultramarathons (longer than a marathon, or a backyard, timed or 200+ mile format). The other 1 are shorter races.
What is the busiest month for trail races and ultramarathons in Montana?
October 2026, with 3 of the 6. June 2027 follows with 2.
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