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Washington Half Marathon Calendar 2025-2026

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Explore the best half marathons in Washington for 2025-2026! Our updated list features 157 exciting races across the region. Find your next race in Washington below and join the running community at these great events!

May 2026
May
31
Su

Run the 509

5 km 10 km Half Marathon
June 2026
Jun
6-7
Sa - Su

North Olympic Discovery Marathon

5 km 10 km Half Marathon Marathon
Jun
6
Sa

The Best Races - Seattle

5 km 10 km 13 mi
Jun
6
Sa

US Road Running - Everett

5 km 10 km Half Marathon
Jun
7
Su

The Great Ferry Race

13 mi
Jun
7
Su

Light at the End of the Tunnel Marathon

Trail Run Half Marathon Marathon
Jun
13
Sa

Super Marathon & Half Marathon

Trail Run 13 mi 26 mi
Jun
13
Sa

US Road Running - Everett

5 km 10 km Half Marathon
Jun
13
Sa

US Road Running - Historic District

5 km 10 km Half Marathon
Jun
20
Sa

Jasper Mountain Trail Fest

Trail Run 4 mi 13 mi 26 mi 100 km
Jun
20-21
Sa - Su

Wild Woman Trail Marathon

Trail Run Half Marathon Marathon 50 km
Jun
20
Sa

Tiger Peak Challenge

Trail Run 5 mi Half Marathon 50 km
Jun
20
Sa

The Best Races - Seattle

5 km 10 km 13 mi
Jun
20
Sa

Snoqualmie Valley Half Marathon

10 km Half Marathon
Jun
20
Sa

US Road Running - Everett

5 km 10 km Half Marathon
Jun
20
Sa

US Road Running - Pasco

5 km 10 km Half Marathon
Jun
27
Sa

Seattle Half Marathon

5 km 10 km Half Marathon
Jun
27
Sa

US Road Running - Olympia

5 km 10 km Half Marathon
Jun
27
Sa

US Road Running - Camas

5 km 10 km Half Marathon
Jun
27
Sa

US Road Running - Spokane

5 km 10 km Half Marathon