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Half Marathons Found In Washington in September

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Half Marathons in Washington in September 2026

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

Race Calendar: Half Marathons Found In September

🚀Boosted

Run for Donuts 5K/10K/13.1 SEATTLE

Seattle, Washington
Sat 26 Sep 26
$32.80 - $48.70
🚀Boosted

Anacortes Half Marathon & 5k

Anacortes, Washington
Sat 19 Sep 26
$34.92 - $64.07
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Redmond Harvest Half Marathon

Redmond, Washington
Mon 07 Sep 26
$59.00

Cascade Express Marathon & Half Marathon

North Bend, Washington
Sat 12 Sep 26
$150.46 - $182.26

Medal Madness 5K, 10K, & 13.1M at Olympia, WA (37)

Olympia, Washington
Sat 12 Sep 26
$33.80 - $70.90

Beat the Blerch

Carnation, Washington
Sat 12 Sep 26
$44.37 - $130.17

National Chocolate Day: Run for Chocolates 5K/10K/13.1 SEATTLE

Seattle, Washington
Sat 12 Sep 26
$32.80 - $48.70

Run for Mental Health 5K/10K/13.1 SEATTLE

Seattle, Washington
Sat 12 Sep 26
$32.80 - $48.70

Medal Madness 5K, 10K, & 13.1M at Everett, WA (37)

Everett, Washington
Sat 12 Sep 26
$33.80 - $70.90

16th Annual Race For A Soldier Half Marathon, 10K & 5K, Virtual Run, and Kids Run

Gig Harbor, Washington
Sun 13 Sep 26
$17.37 - $80.85

Skagit Flats Marathon, Half & 5k

Burlington, Washington
Sun 13 Sep 26
$32.80 - $69.90

Medal Madness 5K, 10K, 13.1M at Pasco, WA (38)

Pasco, Washington
Sat 19 Sep 26
$33.80 - $70.90

Anacortes Half Marathon & 5k

Anacortes, Washington
Sat 19 Sep 26
$34.92 - $64.07

Orca Half Marathon

Seattle, Washington
Sat 19 Sep 26 - Sun 20 Sep 26
$65.37 - $179.85

RUN THE DAM 2026

Grand Coulee, Washington
Sat 19 Sep 26
$32.80 - $69.90

Fall - Mud Mountain Dam Marathon & Half Marathon

Enumclaw, Washington
Sat 19 Sep 26
$93.45 - $104.15

Quilcene Oyster Races

Quilcene, Washington
Sun 20 Sep 26
Free - $59.30

Bellingham Bay Marathon

Bellingham, Washington
Sun 20 Sep 26
$34.48 - $198.88

Colbert Autumn Classic Half Marathon & 4-Mile Loop

Colbert, Washington
Sat 26 Sep 26
$27.50 - $54.00

Pacific Coast Running Festival

Long Beach, Washington
Sat 26 Sep 26
$23.60 - $106.76

Medal Madness 5K, 10K & 13.1M at Camas, WA (39)

Camas, Washington
Sat 26 Sep 26
$33.80 - $70.90

Fidalgo Trail Run

Anacortes, Washington
Sat 26 Sep 26
Free - $99.93

Oktoberfest Run 5K/10K/13.1 SEATTLE

Seattle, Washington
Sat 26 Sep 26
$32.80 - $48.70

Run for Donuts 5K/10K/13.1 SEATTLE

Seattle, Washington
Sat 26 Sep 26
$32.80 - $48.70

Medal Madness 5K, 10K, & 13.1M at Spokane, WA (39)

Spokane, Washington
Sat 26 Sep 26
$33.80 - $70.90
Showing 1-23 of 23 results

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