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Half Marathon Calendar near Seattle 2025-2026

Explore the top half marathons near Seattle for 2025-2026! We've gathered 56 exciting races in the area. Check out our detailed list below to find your next local race.

October 2025
Oct
18
Saturday

The Best Races - Seattle

5 km 10 km 13 mi
Oct
26
Sunday

Fall Freakin Fun Run

21 km 42 km 50 km
November 2025
Nov
1
Saturday

Half Marathon at Langus Riverfront Park

5 km 10 km 15 km 13 mi
Nov
1
Saturday

The Best Races - Seattle

5 km 10 km 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
15
Saturday

The Best Races - Seattle

5 km 10 km 13 mi
Nov
27
Thursday

Wattle Waddle

21 km 42 km 50 km
Nov
28
Friday

Grateful Runners Turkeys Revenge

21 km 42 km 50 km
Nov
29
Saturday

Seattle Ghost Marathon

13 mi 26 mi 50 km
Nov
29
Saturday

The Best Races - Seattle

5 km 10 km 13 mi
Nov
30
Sunday

Seattle Marathon

13 mi 26 mi
December 2025
Dec
6
Saturday

Half Marathon at Langus Riverfront Park

5 km 10 km 13 mi
Dec
13
Saturday

Pigtails Run

Trail Run 21 km 42 km 50 km
Dec
13
Saturday

Santa Runs Tacoma

5 km 10 km 21 km
Dec
13
Saturday

The Best Races - Seattle

5 km 10 km 13 mi
Dec
27
Saturday

The Best Races - Seattle

5 km 10 km 13 mi
January 2026
Jan
3
Saturday

The Best Races - Seattle

5 km 10 km 13 mi
Jan
17
Saturday

The Best Races - Seattle

5 km 10 km 13 mi
February 2026
Feb
7
Saturday

The Best Races - Seattle

5 km 10 km 13 mi
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