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Half Marathons Found In Washington

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Half Marathons in Washington 2025 - 2026

The most comprehensive list of Half Marathons in and near Washington in 2025 - 2026. Find your perfect race!

If you're exploring half marathon races in nearby states, take a look at our range of:

Start your adventure with findarace, your one-stop destination for the most comprehensive list of runs, swims, and cycles across the US.


Race Calendar: Half Marathons Found In Washington

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Ninja 1M, 5K, 10K, 15K, & Half Marathon at Lowell Riverfront Park, Everett, WA (33) 80

Everett, Washington
16 Aug 25
$27.75 - $70.15
🚀Boosted

Mud Mountain Dam Half Marathon / 5K

Buckley, Washington
20 Sep 25
$38.60 - $81.00
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RUN THE DAM 2025

Grand Coulee, Washington
20 Sep 25
$32.80 - $69.90

Orca Half Marathon

Seattle, Washington
20 Sep 25 - 21 Sep 25
Free - $189.57

Mud Mountain Dam Half Marathon / 5K

Buckley, Washington
20 Sep 25
$38.60 - $81.00

Anacortes Half Marathon & 5k

Anacortes, Washington
20 Sep 25
$28.56 - $56.12

Quilcene Oyster Races

Quilcene, Washington
21 Sep 25
Free - $64.60

Bellingham Bay Marathon

Bellingham, Washington
21 Sep 25
$45.44 - $263.50

Medal Madness 5K, 10K, & Half Marathon at Liberty Park, Spokane, WA (39) 80

Spokane, Washington
27 Sep 25
$33.05 - $70.15

National Singles Day: Singles & Friends Running Club SEATTLE

Seattle, Washington
27 Sep 25
$32.80 - $48.70

BRRC 48th Colbert Autumn Classic Half Marathon and 3rd Annual 4-Mile Loop

Colbert, Washington
27 Sep 25
$32.80 - $54.00

National Coffee Day: Run for Coffee SEATTLE

Seattle, Washington
27 Sep 25
$32.80 - $48.70

Fidalgo Trail Run

Anacortes, Washington
27 Sep 25
Free - $105.33

Cheers to Oktoberfest Run 5K/10K/13.1 SEATTLE

Seattle, Washington
04 Oct 25
$32.80 - $48.70

Run for Donuts 5K/10K/13.1 SEATTLE

Seattle, Washington
04 Oct 25
$32.80 - $48.70

Haunted 1M, 5K, 10K, 15K, & Half Marathon at Langus Riverfront Park, Everett, WA (40) 80

Everett, Washington
04 Oct 25
$27.75 - $70.15

Run for the Gnomes Half Marathon & 10K

Maple Valley, Washington
04 Oct 25
$43.40 - $80.50

Poulsbo Half Marathon & 10k

Poulsbo, Washington
05 Oct 25
$65.37 - $92.37

Haunted 5K, 10K, 13.1 & 26.2 at Heritage Park, Olympia, WA (41) 150

Olympia, Washington
11 Oct 25
$33.05 - $96.65

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

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

Girlfriends Run

Vancouver, Washington
12 Oct 25
Free - $102.44

The Spokane Marathon

Spokane, Washington
12 Oct 25
$54.00 - $117.60

Haunted 1M, 5K, 10K, 15K, & Half Marathon at Chiawana Park, Pasco, WA (42) 80

Pasco, Washington
18 Oct 25
$27.75 - $70.15

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

Seattle, Washington
18 Oct 25
$32.80 - $48.70

Lake Washington Half Marathon

Kirkland, Washington
18 Oct 25 - 21 Oct 25
$56.73 - $96.69

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

Everett, Washington
18 Oct 25
$33.05 - $96.65

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

Seattle, Washington
18 Oct 25
$32.80 - $48.70

Haunted 5K, 10K, & Half Marathon at Liberty Park, Spokane, WA (43) 80

Spokane, Washington
25 Oct 25
$33.05 - $70.15

Haunted 5K, 10K, & Half Marathon at Heritage Park, Olympia, WA (43) 80

Olympia, Washington
25 Oct 25
$33.05 - $70.15

Tri-Cities Marathon

Richland, Washington
26 Oct 25
$75.00 - $180.00

Halloween Trick or Trot Run 5K/10K/13.1 SEATTLE

Seattle, Washington
01 Nov 25
$32.80 - $48.70

Run SEATTLE "Emerald City" 5K/10K/13.1 FALL

Seattle, Washington
01 Nov 25
$32.80 - $48.70

Pie Gobbler 1M, 5K, 10K, 15K, & Half Marathon at Langus Riverfront Park, Everett, WA (44) 80

Everett, Washington
01 Nov 25
$27.75 - $70.15

Pie Gobbler 5K, 10K, 13.1 & 26.2 at Heritage Park, Olympia, WA (44) 150

Olympia, Washington
01 Nov 25
$33.05 - $96.65

Pie Gobbler 5K, 10K, & Half Marathon at Heritage Park, Olympia, WA (45)

Olympia, Washington
08 Nov 25
$33.05 - $70.15

Run the Bay

University Place, Washington
09 Nov 25
$65.66 - $108.06

Pie Gobbler 1M, 5K, 10K, 15K, & Half Marathon at Chiawana Park, Pasco, WA (46) 80

Pasco, Washington
15 Nov 25
$27.75 - $70.15

Bed to 5K/10K/13.1 Snoozers Run SEATTLE

Seattle, Washington
15 Nov 25
$32.80 - $48.70

Pie Gobbler 1M, 5K, 10K, 15K, & Half Marathon at Lowell Riverfront Park, Everett, WA (46) 80

Everett, Washington
15 Nov 25
$27.75 - $70.15

Veterans Day Freedom Run 5K/10K/13.1 SEATTLE

Seattle, Washington
15 Nov 25
$32.80 - $48.70

Pie Gobbler 5K, 10K, & Half Marathon at Liberty Park, Spokane, WA (47) 80

Spokane, Washington
22 Nov 25
$33.05 - $70.15

Pie Gobbler 5K, 10K, & Half Marathon at Heritage Park, Olympia, WA (47)

Olympia, Washington
22 Nov 25
$33.05 - $70.15
Showing 41-80 of 115 results
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