Sports · Marathon
Lean Horse
A challenging ultra-marathon event held in the beautiful Black Hills of South Dakota.
The Lean Horse Ultra Marathon is a premier endurance event held annually in the rugged and scenic Black Hills of Custer, South Dakota. Runners from across the country gather to test their limits across various distances, including 20-mile, 30-mile, 50-mile, 100-mile, and a 5-person relay. This race offers a unique opportunity to experience the natural beauty of the region while pushing physical and mental boundaries in a supportive, competitive environment.
What to Expect
A demanding trail running experience through the Black Hills with well-supported aid stations and a vibrant running community.
Who Should Attend
- Ultra runners
- Endurance athletes
- Trail running enthusiasts
- Relay teams
Agenda Overview
The event takes place on July 31, 2026, with various start times depending on the race distance chosen.
Venue & Address
Organizer
Lean Horse Ultra · Organization
Organizers of the annual Lean Horse Ultra Marathon in South Dakota.
Frequently Asked Questions
What distances are available?
20, 30, 50, 100 miles, and a 5-person relay.
Where is the race?
Custer, South Dakota.
When is the race?
July 31, 2026.
Is it a trail race?
Yes, it takes place in the Black Hills.
How do I register?
Registration is available through the official race website.
Is there a relay option?
Yes, a 5-person relay is available.
Tags
Running
Ultra
Marathon
Custer
Black Hills
Sports
Summary
Annual ultra-marathon race series in the Black Hills of South Dakota.
Reference:
raceroster.com
Highlights
- Multiple race distances
- Scenic Black Hills course
- Endurance challenge
- 5-person relay option
- Community atmosphere
- Professional race management
More in Custer
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