South Dakota Marathons
7 upcoming marathons across South Dakota, updated nightly. Want radius search and maps? Open these in the Race Finder.
August 2026
- Sat 8/1Lean Horse Ultra MarathonCuster, SD 路 Other 路 50K 路 50 Mile 路 100 Mile 路 Marathon
- Sun 8/23Leading Ladies Marathon / Dakota Spirit MarathonSpearfish, SD 路 Marathon 路 Half Marathon 路 10K 路 5K
September 2026
- Sun 9/13Sundance to Spearfish MarathonSpearfish, SD 路 Marathon
- Wed 9/16Black Hills Veterans March and MarathonDeadwood, SD 路 100 Mile 路 Marathon 路 Other
- Sun 9/20Sioux Falls MarathonSioux Falls, SD 路 Marathon 路 Half Marathon 路 5K
October 2026
- Sat 10/3Brookings MarathonBrookings, SD 路 Marathon 路 Half Marathon 路 5K
- Sun 10/4Run Crazy HorseCrazy Horse, SD 路 Half Marathon 路 Marathon 路 5K 路 Other
More South Dakota: 5K Races 路 10K Races 路 All South Dakota races 路 Browse by state