Lean Horse Ultra

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. Course Overview Surface: Crushed Limestone Course: Mickelson Trail Elevation Profile: Extended gentle climbs. This is due to the fact the course is on an old railroad bed. Hosting Town: Custer, South Dakota Average August daytime temperature: High of 79 degrees. Low of 53 degrees. Fun Facts 33rd sanctioned 100-mile race in the United States Known as one of the best non technical courses in the United States One of the most scenic rails to trails courses in the country