Washington Half Marathon Calendar 2025-2026

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Explore the best half marathons in Washington for 2025-2026! Our updated list features 109 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
Sunday

Evergreen Half Marathon

5 mi 21 km
June 2026
Jun
6-7
Sa - Su

North Olympic Discovery Marathon

5 km 10 km 21 km 42 km
Jun
19-21
Fr - Su

Wild Woman Trail Marathon

Trail Run 21 km 42 km 50 km
Jun
20
Saturday

Jasper Mountain Trail Fest

Trail Run 4 mi 13 mi 26 mi 100 km
Jun
27
Saturday

Tiger Peak Challenge

Trail Run 5 mi 21 km 50 km
July 2026
Jul
11
Saturday

Devil's Gulch

Trail Run 21 km 50 mi 100 mi
Jul
17-18
Fr - Sa

Mount Rainier Half Marathon

Trail Run 5 km 10 km 13 mi
Jul
19
Sunday

B & O Half Marathon

10 km 21 km
Jul
25-26
Sa - Su

Jack & Jill Downhill Marathon

13 mi 26 mi
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