Lean Horse Trail Races

More races nearby

• Lean Horse Ultra Marathon [leanhorseultra.com] [Register at raceroster.com]

  Sat, Aug 01, 2026 at 5:00 AM

  Description

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  RACE OVERVIEW

  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...

  RACE OVERVIEW

  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

  910 m from Custer
  Homestead Drive, Custer, South Dakota, 57730, United States
  OpenStreetMap Google Maps

  Marathon Road Run Trail Ultra

• Outlaw Ranch Gravel [rasdak.com] [Register at raceroster.com]

  Fri, Sep 04, 2026 at 5:00 PM

  Description

  Explore the Rugged Beauty of the Black Hills — 3-Day Gravel Ride with RASDak!

  Get ready for a weekend of adventure, challenge, and camaraderie on the RASDak Gravel Experience: Black Hills Edition — a 3-day gravel ride based out of the scenic Outlaw Ranch Retreat Center near Custer, South Dakota!

  6.8 km from Custer
  unnamed road, Custer County, South Dakota, United States
  OpenStreetMap Google Maps

  Cycling Gravel Run

• Mount Rushmore Half Marathon [vacationraces.com]

  Sat, Sep 12, 2026

  22.5 km from Custer
  Ghost Canyon Road, Custer County, South Dakota, United States
  OpenStreetMap Google Maps

  Half Marathon Run