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Half Marathons Found In Washington in October

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Half Marathons in Washington in October 2025

Find A Race is the US's favourite event listings site. Check out our list of October 2025 Half Marathons in Washington below.

Race Calendar: Half Marathons Found In October

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Bellingham Bay Marathon

Bellingham, Washington
Sun 21 Sep 25 - Fri 10 Oct 25
$61.88 - $347.50
🚀Boosted

Haunted 5K, 10K, 13.1 & 26.2 at Lowell Riverfront Park, Everett, WA (42) 80

Everett, Washington
Sat 18 Oct 25
$33.80 - $97.40
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Haunted 5K, 10K, 13.1 & 26.2 at Heritage Park, Olympia, WA (41) 80

Olympia, Washington
Sat 11 Oct 25
$33.80 - $97.40

Haunted 5K, 10K, & 13.1 at McCollum Park, Everett, WA (41) 30

Everett, Washington
Sat 11 Oct 25
$33.80 - $70.90

Falla Walla Half Marathon, 10K & Heroes 5K Run

Walla Walla, Washington
Sat 11 Oct 25
$54.00 - $75.20

The Spokane Marathon

Spokane, Washington
Sun 12 Oct 25 - Sun 19 Oct 25
$22.20 - $144.10

Girlfriends Run

Vancouver, Washington
Sun 12 Oct 25
Free - $113.24

Sun City Barry James Memorial 5K and Half Marathon

Yakima, Washington
Sun 12 Oct 25
$16.90 - $22.20

International Sloth Day Run 5K/10K/13.1 SEATTLE

Seattle, Washington
Sat 18 Oct 25
$32.80 - $52.94

Lake Washington Half Marathon

Kirkland, Washington
Sat 18 Oct 25
$56.73 - $107.49

The Salty Half and 10K too!

Seattle, Washington
Sat 18 Oct 25
$52.94

Haunted 5K, 10K, 13.1 & 26.2 at Lowell Riverfront Park, Everett, WA (42) 80

Everett, Washington
Sat 18 Oct 25
$33.80 - $97.40

Haunted 5K, 10K, & Half Marathon at Chiawana Park, Pasco, WA (42) 40

Pasco, Washington
Sat 18 Oct 25
$33.80 - $70.90

Run Against Breast Cancer 5K/10K/13.1 SEATTLE

Seattle, Washington
Sat 18 Oct 25
$32.80 - $52.94

Haunted 5K, 10K, & Half Marathon at Heritage Park, Olympia, WA (43) 40

Olympia, Washington
Sat 25 Oct 25
$33.80 - $70.90

Haunted 5K, 10K, & Half Marathon at Liberty Park, Spokane, WA (43) 60

Spokane, Washington
Sat 25 Oct 25
$33.80 - $70.90

Tri-Cities Marathon

Richland, Washington
Sun 26 Oct 25
$75.00 - $180.00

Bellingham Bay Marathon

Bellingham, Washington
Sun 21 Sep 25 - Fri 10 Oct 25
$61.88 - $347.50
Showing 1-16 of 16 results

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