South Dakota Marathons
6 upcoming marathons across South Dakota, updated nightly. Want radius search and maps? Open these in the Race Finder.
When to race: marathons in South Dakota
South Dakota has 6 upcoming marathons over the next 12 months. September is the busiest month for them, with 3. Most are around Deadwood, Spearfish, Sioux Falls. The next one is Sundance to Spearfish Marathon on September 13 in Spearfish.
- Sep 20263 races
- Oct 20262 races
- Jun 20271 race
September 2026
- Sun 9/13Sundance to Spearfish MarathonSpearfish, SD · Marathon · register ↗
- Wed 9/16Black Hills Veterans March and MarathonDeadwood, SD · 110 Miles · Marathon · 16 Miles · from $50 · register ↗
- Sun 9/20Sioux Falls MarathonSioux Falls, SD · Marathon · Half Marathon · 5K · from $30 · register ↗
October 2026
- Sat 10/3Brookings MarathonBrookings, SD · Marathon · Half Marathon · 5K · register ↗
- Sun 10/4Run Crazy HorseCrazy Horse, SD · Half Marathon · Marathon · 5K · 1K · register ↗
June 2027
- Sat 6/5Deadwood Mickelson Trail MarathonDeadwood, SD · Half Marathon · Marathon · 5K · 1K · Trail · register ↗
Planning a race
- Boston qualifying timesthe BQ standard for every age group, and what the cutoff has really been
- Choosing a first marathonwhat to look for in a debut race, and what to avoid
More South Dakota: 5K Races · 10K Races · Ultras · All South Dakota races · Browse by state