South Dakota Ultramarathons
4 upcoming ultras across South Dakota, updated nightly. Want radius search and maps? Open these in the Race Finder.
May 2027
- Sat 5/1TutHell 50KSioux Falls, SD · 50K · register ↗
June 2027
- Sat 6/12The Big Mick 2027Custer, SD · 100 Mile · register ↗
- Fri 6/25Black Hills 100Sturgis, SD · 100 Mile · register ↗
July 2027
- Sat 7/31Lean Horse Ultra MarathonCuster, SD · 100 Mile · 50 Mile · 30 Miles · 20 Miles · Marathon · register ↗
Planning a race
- The adventure listrim to rim, the big rounds, and routes worth planning a year around
- Getting inhow entry works for the races that sell out or ballot
More South Dakota: Half Marathons · 5K Races · 10K Races · All South Dakota races · Browse by state