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Half Marathons Found In Washington in August

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Half Marathons in Washington in August 2026

Find A Race is the US's favourite event listings site. Check out our list of August 2026 Half Marathons in Washington below.

Race Calendar: Half Marathons Found In August

🚀Boosted

Iron Horse Half Marathon

North Bend, Washington
Sun 30 Aug 26
$56.73 - $89.13
🚀Boosted

Ninja 5K, 10K, & Half Marathon at Heritage Park, Olympia, WA (34) 80

Olympia, Washington
Sat 22 Aug 26
$33.80 - $70.90
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Ninja 5K, 10K, & Half Marathon at Heritage Park, Olympia, WA (32) 80

Olympia, Washington
Sat 08 Aug 26
$33.80 - $70.90

Ninja 5K, 10K, & Half Marathon at Heritage Park, Olympia, WA (34) 80

Olympia, Washington
Sat 22 Aug 26
$33.80 - $70.90

Iron Horse Half Marathon

North Bend, Washington
Sun 30 Aug 26
$56.73 - $89.13
Showing 1-3 of 3 results