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Running Calendar near Seattle 2025-2026

Monthly updates for Seattle

Get new running races (and updates) in your inbox every month.

Explore the top running races near Seattle for 2025-2026! We've gathered 164 exciting races in the area. Check out our detailed list below to find your next local race.

Half Marathons Marathons Trail Runs Triathlons
September 2026
Sep
12
Sa

Remembrance of 9/11 Memorial 9.11K

5 km 9 km
Sep
12
Sa

Oktoberfest Fly Away 10K Run

5 km 10 km
Sep
12
Sa

Cascade Express Marathon

Trail Run 13 mi Marathon
Sep
12
Sa

Beat the Blerch

Trail Run 5 km 10 km Half Marathon Marathon
Sep
13
Su

Tunnel Light Marathon

Trail Run Half Marathon Marathon
Sep
19-20
Sa - Su

Seattle North Spartan Trifecta Weekend

Obstacle Run 5 km 10 km Half Marathon
Sep
19-20
Sa - Su

Orca Half Marathon

8 mi Half Marathon
Sep
20
Su

Run of the Mill 5k - Mill Creek

5 km
Sep
20
Su

Quilcene Oyster Races

5 km 10 km Half Marathon
October 2026
Oct
3-4
Sa - Su

North Bend Trail Fest

Trail Run 10 km 30 km
Oct
3
Sa

Run for the Gnomes Half Marathon

5 km Half Marathon
Oct
5
Mo

North Bend Skyline 30K

Trail Run
Oct
10
Sa

Defiance 50k

15 km 30 km 50 km
Oct
11
Su

Snohomish River Run

5 km 10 km Half Marathon Marathon
Oct
17
Sa

Where's Bigfoot 5K

5 km
Oct
24
Sa

Wicked Fast 10K

5 km 10 km
November 2026
Nov
7
Sa

Grand Ridge Trail Run

Trail Run 5 mi Half Marathon Marathon 50 km
Nov
15
Su

Kirkland Turkey Trot

5 km 10 km
Nov
26
Th

Maple Valley Turkey Trot 5K

5 km
Nov
26
Th

Ten Trails Active Club 5K Turkey Trot

5 km