Washington Obstacle Race Calendar 2025-2026

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Explore the best obstacle runs in Washington for 2025-2026! Our updated list features 331 exciting races across the region. Find your next race in Washington below and join the running community at these great events!

September 2025
Sep
20
Saturday

Mud Mountain Dam Marathon

5 km 13 mi 26 mi
Sep
20
Saturday

Run the Dam

5 km 10 km 13 mi
Sep
20
Saturday

Half Marathon at Lowell Riverfront Park

5 km 10 km 15 km 13 mi
Sep
20
Saturday

Newport Autumn Bloom

5 km 10 km
Sep
21
Sunday

Bellingham Bay Marathon

5 km 10 km 13 mi 26 mi
Sep
21
Sunday

Ironman 70.3 Washington Tri-Cities

Triathlon
Sep
21
Sunday

Quilcene Oyster Races

5 km 10 km 13 mi
Sep
27
Saturday

Fidalgo Trail Run

Trail Run 5 mi 13 mi 26 mi
Sep
27
Saturday

Half Marathon at Liberty Park

5 km 10 km 15 km 13 mi
Sep
27-28
Sa - Su

Moran Constitutional Relay

Trail Run 70 mi
Sep
27
Saturday

Return of the Salmon Celebration - Salmon Run

Trail Run 5 km
Sep
27
Saturday

The Best Races - Seattle

5 km 10 km 13 mi
Sep
27
Saturday

Puyallup Valley Half Marathon

10 km 13 mi
October 2025
Oct
4
Saturday

Longview Early Edition Rotary Harvest Classic

5 km 10 km
Oct
4
Saturday

Lastest Not Fastest

Backyard Ultra 4 mi
Oct
4
Saturday

Leavenworth Marathon

13 mi 26 mi
Oct
4
Saturday

OktoberFeast

5 km
Oct
4
Saturday

Spruce Railroad Run

5 km 10 km
Oct
4
Saturday

Gone Fir a Run 50k

Trail Run 50 km
Oct
4
Saturday

Half Marathon at Langus Riverfront Park

5 km 10 km 15 km 13 mi
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