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Half Marathons Found In Washington in August
View all ↓Half Marathons in Washington in August 2025
Find A Race is the US's favourite event listings site. Check out our list of August 2025 Half Marathons in Washington below.
Race Calendar: Half Marathons Found In August
🚀Boosted
Tacoma Narrows Half Marathon / 5K
Tacoma, Washington
23 Aug 25
$72.05 - $136.25
🚀Boosted
Sunrise Marathon 5K/10K/13.1 SEATTLE
Seattle, Washington
30 Aug 25
$32.80 - $52.94
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Ninja 5K, 10K, & Half Marathon at Liberty Park, Spokane, WA (34) 30
Spokane, Washington
23 Aug 25
$33.80 - $70.90
Tacoma Narrows Half Marathon / 5K
Tacoma, Washington
23 Aug 25
$72.05 - $136.25
Ninja 5K, 10K, 15K, & Half Marathon at Heritage Park, Olympia, WA (34) 40
Olympia, Washington
23 Aug 25
$33.80 - $70.90
Iron Horse Half Marathon
North Bend, Washington
24 Aug 25
$56.73 - $117.21
Medal Madness 5K, 10K, & Half Marathon at Heritage Park, Olympia, WA (35) 65
Olympia, Washington
30 Aug 25
$33.80 - $70.90
Labor Day Run 5K/10K/13.1 SEATTLE
Seattle, Washington
30 Aug 25
$32.80 - $52.94
Sunrise Marathon 5K/10K/13.1 SEATTLE
Seattle, Washington
30 Aug 25
$32.80 - $52.94
Showing 1-7 of 7 results