Washington Half Marathon Calendar 2025-2026

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Explore the best half marathons in Washington for 2025-2026! Our updated list features 132 exciting races across the state. Find your next race in Washington below and join the running community at these great events!

October 2025
Oct
12
Sunday

Snohomish River Run

5 km 10 km 13 mi 26 mi
Oct
18-21
Sa - Tu

Lake Washington Half Marathon

13 mi
Oct
25
Saturday

Half Marathon at Liberty Park

5 km 10 km 15 km 13 mi
Oct
26
Sunday

Tri-Cities Marathon

13 mi 26 mi
November 2025
Nov
1
Saturday

Half Marathon at Langus Riverfront Park

13 mi
Nov
8
Saturday

Grand Ridge Trail Run

Trail Run 5 mi 13 mi 26 mi 50 km
Nov
9
Sunday

Run the Bay

5 km 10 km 13 mi
Nov
22
Saturday

Half Marathon at Liberty Park

5 km 10 km 15 km 13 mi
Nov
29
Saturday

Seattle Ghost Marathon

13 mi 26 mi 50 km
Nov
30
Sunday

Seattle Marathon

13 mi 26 mi
December 2025
Dec
13
Saturday

Santa Runs Tacoma

5 km 10 km 13 mi
Dec
13
Saturday

Pigtails Run

Trail Run 13 mi 26 mi 50 km
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