50 Mile Races in South Dakota
As of November 1, 2026, Crewable lists 1 upcoming 50 mile race in South Dakota in July 2027. It is Lean Horse Ultra Marathon on July 31, 2027 in Custer. Registration is open.
Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites
Race calendar
Quick answers
What is the next 50 mile race in South Dakota?
Lean Horse Ultra Marathon, on Saturday, July 31, 2027, in Custer. Distances: 100 mi, 50 mi, 30 mi.
How many 50 mile races in South Dakota have open registration?
It lists registration as open as of November 1, 2026.
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