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Trail Running Calendar near Monroe 2025-2026

Explore the top trail runs near Monroe for 2025-2026! We've gathered 53 exciting races in the area. Check out our detailed list below to find your next local race.

July 2025
Jul
26
Saturday

Seattle - HFTC 5k

5 km
Jul
27
Sunday

Craft Classic Seattle

5 km 13 mi
August 2025
Aug
2
Saturday

Lake Tye Triathlon

Triathlon
Aug
2
Saturday

Half Marathon at Langus Riverfront Park

5 km 10 km 15 km 13 mi
Aug
9
Saturday

Cougar Mountain Trail Run Series #4

Trail Run 5 km 14 mi 26 mi
Aug
10
Sunday

Lake Union 10K

10 km
Aug
10
Sunday

Sundae Runday

2 mi 5 km 10 km
Aug
16
Saturday

Emerald City 5k

5 km
Aug
16
Saturday

Half Marathon at Lowell Riverfront Park

5 km 10 km 15 km 13 mi
Aug
23
Saturday

Run a Muk 5k/10k

5 km 10 km
Aug
24
Sunday

Iron Horse Half Marathon

13 mi
Aug
24
Sunday

Beaver Lake Triathon

Triathlon
Aug
30
Saturday

Summer Spirit Run

5 km 10 km 15 km
Aug
31
Sunday

Rattlesnake Lake Triathlon

Triathlon
September 2025
Sep
1
Monday

Redmond Harvest Half Marathon

13 mi
Sep
6
Saturday

Lake Stevens Triathlon

Triathlon
Sep
6
Saturday

Half Marathon at Langus Riverfront Park

5 km 10 km 15 km 13 mi
Sep
6
Saturday

Cascade Express Marathon

Trail Run 13 mi 26 mi
Sep
6
Saturday

Beat the Blerch

Trail Run
Sep
13-14
Sa - Su

Seattle Spartan Trifecta Weekend

Obstacle Run 5 km 10 km 21 km
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