Course
100 Mile100 mi
100 Mile Relay100 mi
50 Mile50 mi
30 Mile30 mi
48.3 km30 mi
20 Mile20 mi
Key dates
- ·RegistrationNot open yet
- ★Race dayJuly 2027 · date to be announced
Provisional date, projected from last year — the organiser has not announced this edition yet. We show the month only.
About
The Lean Horse Ultra Marathon, held on the Mickelson Trail in the Black Hills of South Dakota, features the following events: 100 Mile, 100 Mile Relay, 50 Mile, 30 Mile, 20 Mile, and 30 Mile Black Hills CrossFit Edition.
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Save Lean Horse Ultra Marathon to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
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A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.