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Half Marathon calendar near Seattle 2025-2026

Explore the top half marathons near Seattle for 2025-2026! We've gathered 21 exciting races in the area. Check out our detailed list below to find your next local race.

March 2025
Mar
15
Saturday

Run The Green

10 km 13 mi
Mar
15
Saturday

St. Paddy's Day Run

5 km 10 km 13 mi
Mar
15
Saturday

Half Marathon at Lowell Riverfront Park

5 km 10 km 15 km 13 mi
Mar
22
Saturday

Dash Point Trail Run

Trail Run 10 km 13 mi
Mar
22
Saturday

Spring Run for Fun @ Bridle Trails

Trail Run 5 km 10 km 13 mi 26 mi
Mar
22
Saturday

Fall City Classic

5 km 8 km 13 mi
Mar
22-23
Sa - Su

Seattle Cherry Blossom Run

5 km 10 km 13 mi
April 2025
Apr
5
Saturday

Half Marathon at Langus Riverfront Park

13 mi
Apr
13
Sunday

Mill Town Marathon

10 km 13 mi 26 mi
Apr
19
Saturday

Squak Mountain Trail Run

Trail Run 12 km 13 mi 50 km
Apr
19
Saturday

Half Marathon at Lowell Riverfront Park

5 km 10 km 15 km 13 mi
May 2025
May
3-4
Sa - Su

Tacoma City Marathon

5 km 10 km 13 mi 26 mi
May
3
Saturday

Half Marathon at Langus Riverfront Park

5 km 10 km 15 km 13 mi
May
4
Sunday

Kirkland Half Marathon

5 km 13 mi
May
4
Sunday

Mt Si Trail Run

Trail Run 13 mi 26 mi 50 km 50 mi
May
10
Saturday

Snohomish Women's Run

5 km 10 km 13 mi
May
17
Saturday

Half Marathon at Lowell Riverfront Park

5 km 10 km 15 km 13 mi
May
31
Saturday

Soaring Eagle Trail Run

Trail Run 5 km 10 km 13 mi
June 2025
Jun
1
Sunday

Evergreen Half Marathon

5 mi 13 mi
Jun
7
Saturday

Half Marathon at Langus Riverfront Park

13 mi
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