Trail Races & Ultramarathons in Missouri
As of October 6, 2026, Crewable lists 40 upcoming trail races and ultramarathons in Missouri from October 2026 to August 2027. The next is Backyard Ultra in New Town (Oct 10 8:00AM) on October 10 in Saint Charles. Registration is open for 9. 2 advertise prize money.
Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites
With aid station data
4 aid
10 aid
1 aid
4 aidin 18 days
Show Me Your Free State Marathon and Ultra
St. Joseph, MO552 ft gain
100 mi50 mi+3
Open until Oct 16from $90
4 aidRace calendar
October 2026
15 racesBackyard Ultra in New Town (Oct 10 8:00AM)
Saint Charles, MOBackyard Ultra2.6 miPrize moneyOpen until Oct 11from $25The Rough & Not Ready Women's Trail Weekend
Gatewood, MOShow Me Your Free State Marathon and Ultra
St. Joseph, MO552 ft gain100 mi50 mi+3Open until Oct 16from $90
November 2026
4 racesDecember 2026
3 racesJanuary 2027
4 racesFebruary 2027
3 racesMarch 2027
3 racesApril 2027
4 racesMay 2027
2 racesJune 2027
1 raceAugust 2027
1 raceQuick answers
What is the next trail race or ultramarathon in Missouri?
Backyard Ultra in New Town (Oct 10 8:00AM), on Saturday, October 10, 2026, in Saint Charles. Distances: Backyard Ultra, 2.6 mi.
How many trail races and ultramarathons in Missouri have open registration?
9 of the 40 list registration as open as of October 6, 2026, including Backyard Ultra in New Town (Oct 10 8:00AM), DeClue Loop Trail Race and Find Your Strength Endurance Race.
Which trail races and ultramarathons in Missouri offer prize money?
2 races advertise prize money.
How many of the trail races in Missouri are ultramarathons?
27 of the 40 are ultramarathons (longer than a marathon, or a backyard, timed or 200+ mile format). The other 13 are shorter races.
What is the busiest month for trail races and ultramarathons in Missouri?
October 2026, with 15 of the 40. November 2026 follows with 4.
Cities in Missouri
Neighboring states
More ways to browse
Race planning
Plan your Missouri race
Aid stations, cutoffs and pacing in one free plan. Crew invites and race-day updates come with a Race Pass.
Plan a race free