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Half Marathons Found In Washington in May

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Half Marathons in Washington in May 2026

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

Race Calendar: Half Marathons Found In May

🚀Boosted

Luau 5K, 10K, & 13.1M at Pasco, WA (20)

Pasco, Washington
Sat 16 May 26
$33.80 - $70.90
🚀Boosted

Luau 5K, 10K, & 13.1M at Olympia, WA (21)

Olympia, Washington
Sat 23 May 26
$33.80 - $70.90
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Three Lakes Triathlons and Kings Market San Juan Island Runs

Friday Harbor, Washington
Sun 15 Feb 26 - Sat 20 Jun 26
$54.00 - $244.80

Sunrise Marathon 5K/10K/13.1 SEATTLE

Seattle, Washington
Sat 02 May 26
$32.80 - $48.70

Never Say Never Half Marathon & 10K

Tieton, Washington
Sat 02 May 26
$96.40 - $122.90

Tacoma City Marathon / Half / Ghost / 10K / 5K / 1K

Tacoma, Washington
Sat 02 May 26 - Sun 03 May 26
$13.20 - $267.50

Luau 5K, 10K, & 13.1M at Everett, WA (18)

Everett, Washington
Sat 02 May 26
$33.80 - $70.90

Cinco De Mayo Run 5K/10K/13.1 SEATTLE

Seattle, Washington
Sat 02 May 26
$32.80 - $48.70

Kirkland Half Marathon & 5K

Kirkland, Washington
Sun 03 May 26
$15.31 - $97.77

Luau 5K, 10K, & 13.1M at Olympia, WA (19)

Olympia, Washington
Sat 09 May 26
$33.80 - $70.90

Snohomish Women's Run

Everett, Washington
Sat 09 May 26
$41.28 - $83.68

Luau 5K, 10K, & 13.1M at Everett, WA (19)

Everett, Washington
Sat 09 May 26
$33.80 - $70.90

San Juan Island Half

Friday Harbor, Washington
Sat 09 May 26
$18.37 - $122.61

Soaring Eagle Trail Run

Sammamish, Washington
Sat 16 May 26
Free - $68.61

Luau 5K, 10K, & 13.1M at Pasco, WA (20)

Pasco, Washington
Sat 16 May 26
$33.80 - $70.90

Capital City Marathon

Olympia, Washington
Sat 16 May 26 - Sun 17 May 26
Free - $103.17

Luau 5K, 10K, & 13.1M at Everett, WA (20)

Everett, Washington
Sat 16 May 26
$33.80 - $70.90

Reflection Run

Washougal, Washington
Sun 17 May 26
$46.28 - $70.04
5.0

Windermere Marathon

Spokane, Washington
Sun 17 May 26
Free - $122.90

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

Seattle, Washington
Sat 23 May 26
$32.80 - $48.70

Luau 5K, 10K, & 13.1M at Olympia, WA (21)

Olympia, Washington
Sat 23 May 26
$33.80 - $70.90

Luau 5K, 10K, & 13.1M at Spokane, WA (21)

Spokane, Washington
Sat 23 May 26
$33.80 - $70.90

Luau 5K, 10K, & 13.1M at Camas, WA (21)

Camas, Washington
Sat 23 May 26
$33.80 - $70.90

Memorial Day Run 5K/10K/13.1 SEATTLE

Seattle, Washington
Sat 23 May 26
$32.80 - $48.70

Echo Valley

Chelan, Washington
Sat 30 May 26
Free - $118.29

Spring - Mud Mountain Dam Marathon & Half Marathon

Enumclaw, Washington
Sat 30 May 26
$93.45 - $98.80

Big River Race

Pasco, Washington
Sat 30 May 26
Free - $59.30

Run the 509

Deer Park, Washington
Sun 31 May 26
$16.90 - $54.00
Showing 1-26 of 26 results

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