Lean Horse 100M

Friday, Aug 15, 2025 at 12:00pm

Custer YMCA
644 Crook St.

The Lean Horse Ultra Marathon is run in August every year in the Black Hills of South Dakota. It was first run in 2005. It features a 100-mile race, a 50-mile race, a 30-mile race, a 20-mile race, and a 30-mile Black Hills CrossFit Edition - Singles, 3, and 6 person relays. The course is held on the George S. Mickelson Trail.

Schedule
11:15 AM – 100M Check-In at Start Line  (Custer YMCA, 644 Crook Street)
12:00 PM – 100M Start  (Custer YMCA, 644 Crook Street)
12:15 PM – 4:00 PM – 20M, 30M, 50M Packet Pick-Up (Custer YMCA, 644 Crook Street)
12:15 PM – 4:00 PM – 30M, 50M Drop Bags Due (Custer YMCA, 644 Crook Street)

Registration
100M - $300
100M (Up to 5 Person Relay) - $500
50M - $150
30M - $125
20M - $100
30M Black Hills CrossFit Edition 1 Athlete - $150
30M Black Hills CrossFit Edition 3 Athletes - $300
30M Black Hills CrossFit Edition 6 Athletes - $400

Click Here to Register

View all events in the Blairstown area