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Half Marathons Found In Washington in September
View all ↓Half Marathons in Washington in September 2025
Find A Race is the US's favourite event listings site. Check out our list of September 2025 Half Marathons in Washington below.
Race Calendar: Half Marathons Found In September
πBoosted
Orca Half Marathon
Seattle, Washington
20 Sep 25 - 21 Sep 25
Free - $171.21
πBoosted
Bellingham Bay Marathon
Bellingham, Washington
21 Sep 25
$45.44 - $263.50
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Redmond Harvest Half Marathon
Redmond, Washington
01 Sep 25
$59.00
Medal Madness 1M, 5K, 10K, 15K, & Half Marathon at Langus Riverfront Park, Everett, WA (27) 80
Everett, Washington
06 Sep 25
$27.75 - $70.15
PeaceHealth Appletree Marathon
Vancouver, Washington
06 Sep 25
$52.76 - $542.00
Cascade Express Marathon & Half Marathon
North Bend, Washington
06 Sep 25
$139.86 - $171.66
Beat the Blerch
Carnation, Washington
06 Sep 25
$44.37 - $130.17
Medal Madness 1M, 5K, 10K, 15K, & Half Marathon at Heritage Park, Olympia, WA (36)
Olympia, Washington
06 Sep 25
$27.75 - $70.15
GOAT Run
Port Angeles, Washington
06 Sep 25
$67.78 - $94.28
Medal Madness 1M, 5K, 10K, 15K, & Half Marathon at Heritage Park, Olympia, WA (37) 150
Olympia, Washington
13 Sep 25
$27.75 - $70.15
Skagit Flats Marathon, Half & 5k
Burlington, Washington
14 Sep 25
$32.80 - $80.50
Orca Half Marathon
Seattle, Washington
20 Sep 25 - 21 Sep 25
Free - $171.21
RUN THE DAM 2025
Grand Coulee, Washington
20 Sep 25
$27.50 - $64.60
Medal Madness 1M, 5K, 10K, 15K, & Half Marathon at Lowell Riverfront Park, Everett, WA (38) 80
Everett, Washington
20 Sep 25
$27.75 - $70.15
Anacortes Half Marathon & 5k
Anacortes, Washington
20 Sep 25
$28.56 - $56.12
Bellingham Bay Marathon
Bellingham, Washington
21 Sep 25
$45.44 - $263.50
Quilcene Oyster Races
Quilcene, Washington
21 Sep 25
Free - $59.30
Medal Madness 1M, 5K, 10K, 15K, & Half Marathon at Liberty Park, Spokane, WA (39) 80
Spokane, Washington
27 Sep 25
$27.75 - $70.15
Fidalgo Trail Run
Anacortes, Washington
27 Sep 25
Free - $99.93
Showing 1-17 of 17 results