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Washington Half Marathon Calendar 2025-2026

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Monthly updates for Washington

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Explore the best half marathons in Washington for 2025-2026! Our updated list features 158 exciting races across the region. Find your next race in Washington below and join the running community at these great events!

July 2026
Jul
25
Sa

The Best Races - Seattle

5 km 10 km 13 mi
Jul
25
Sa

US Road Running - Olympia

5 km 10 km Half Marathon
Jul
26
Su

Craft Classic Seattle

5 km Half Marathon
August 2026
Aug
8
Sa

US Road Running - Olympia

5 km 10 km Half Marathon
Aug
9
Su

Tunnel Vision Marathon

Trail Run Half Marathon Marathon
Aug
15
Sa

Twilight at the Bay

Trail Run 5 km 10 km Half Marathon
Aug
22
Sa

US Road Running - Camas

5 km 10 km Half Marathon
Aug
22
Sa

US Road Running - Historic District

5 km 10 km Half Marathon
Aug
29
Sa

Backcountry Rise - Toutle, WA

Trail Run 13 mi 20 mi 50 km
Aug
29-30
Sa - Su

Appletree Marathon

5 km Half Marathon Marathon
Aug
30
Su

Iron Horse Half Marathon

13 mi
September 2026
Sep
5
Sa

Jump off Joe Marathon

Trail Run 10 km 13 mi 26 mi
Sep
7
Mo

Redmond Harvest Half Marathon

13 mi
Sep
12
Sa

Goat Run - Port Angeles, WA

Trail Run Half Marathon Marathon 50 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
13
Su

Skagit Flats Marathon

3 mi 13 mi 26 mi
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