100K Races in Missouri
As of October 22, 2026, Crewable lists 4 upcoming 100K races in Missouri from December 2026 to February 2027. The next is Last Chance Ultra on December 5 in Springfield. Registration is open for 2.
Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites
Race calendar
December 2026
1 raceJanuary 2027
2 racesFebruary 2027
1 raceQuick answers
What is the next 100K race in Missouri?
Last Chance Ultra, on Saturday, December 5, 2026, in Springfield. Distances: 100 mi, 100K, 50 mi.
How many 100K races in Missouri have open registration?
2 of the 4 list registration as open as of October 22, 2026, including Last Chance Ultra and The Shippey Endurance Runs.
What is the busiest month for 100K races in Missouri?
January 2027, with 2 of the 4. December 2026 follows with 1.
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