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Obstacle Race Calendar near Seattle 2025-2026

Explore the top obstacle runs near Seattle for 2025-2026! We've gathered 136 exciting races in the area. Check out our detailed list below to find your next local race.

June 2026
Jun
13
Saturday

Centennial 100 Relay Run

100 km
Jun
20
Saturday

The Best Races - Seattle

5 km 10 km 13 mi
Jun
27
Saturday

Tiger Peak Challenge

Trail Run 5 mi Half Marathon 50 km
Jun
27
Saturday

Seattle Half Marathon

5 km 10 km Half Marathon
July 2026
Jul
4
Saturday

The Best Races - Seattle

5 km 10 km 13 mi
Jul
18
Saturday

Lookin For A Cure Seattle

5 km
Jul
25
Saturday

University Place Twisted Cider 12K

5 km 12 km
Jul
25-26
Sa - Su

Jack & Jill Downhill Marathon

13 mi 26 mi
Jul
25
Saturday

The Best Races - Seattle

5 km 10 km Half Marathon
August 2026
Aug
15
Saturday

One Step Closer

Backyard Ultra 3 hr 6 hr 12 hr 18 hr
Aug
16
Sunday

Sundae Runday

2 mi 5 km 10 km
Aug
22
Saturday

Run A Muk 10k

5 km 10 km
Aug
30
Sunday

Iron Horse Half Marathon

13 mi
September 2026
Sep
12
Saturday

Remembrance of 9/11 Memorial 9.11K

5 km 9 km
Sep
19-20
Sa - Su

Seattle North Spartan Trifecta Weekend

Obstacle Run 5 km 10 km Half Marathon
Sep
20
Sunday

Run of the Mill 5k - Mill Creek

5 km
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