Obstacle Race Calendar United States 2025-2026

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Explore the best obstacle runs in the United States for 2025-2026! Our updated list features 8576 exciting races across the country. Find your next race in the United States below and join the running community at these great events!

May 2026
May
2
Saturday

IronHorse - Riceville, IA

5 km 10 km 13 mi
May
2-3
Sa - Su

Tacoma City Marathon

5 km 10 km 13 mi 26 mi
May
2-3
Sa - Su

Maine Coast Marathon

5 km 13 mi 26 mi
May
3
Sunday

NSRF May the 4th Be With You 5K

5 km
May
3
Sunday

The Big 50 - Pine Mountain, GA

Trail Run 10 km 25 km 50 km
May
3
Sunday

Providence Rhode Races

5 km 13 mi 26 mi
May
3
Sunday

Sisters Country

Trail Run 13 mi 50 km
May
3
Sunday

Breakneck Point Trail Runs

Trail Run 14 mi 26 mi
May
3
Sunday

Edmund Ganem Memorial 5K Run/Walk

5 km
May
3
Sunday

Pasos & Pan Dulce 5K

5 km
May
3
Sunday

Hudson Valley Marathon

5 km 10 km 13 mi 26 mi
May
3
Sunday

Colorado Marathon

5 km 10 km 13 mi 26 mi
May
4-9
Mo - Sa

Cocodona 250

Trail Run 39 mi 79 mi ... 126 mi 256 mi
May
6-9
We - Sa

Bloodroot Spartan Ultra

Obstacle Run 10 mi 200 mi
May
9
Saturday

PACE Marathon

13 mi 26 mi
May
9
Saturday

Mother's Day Run/Walk - St. Charles

5 km
May
9
Saturday

Muddy Crudd's Ultra Trail Party

Trail Run 5 km 6 hr 12 hr
May
9
Saturday

EHQ Valley Falls 12 Hour

Trail Run 6 hr 12 hr
May
9
Saturday

Jump off Rock Half Marathon

10 km 13 mi
May
9
Saturday

Riverside Run 3 Mile

3 mi
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