Half Marathons in Washington — 2026

There are 17 half marathons in Washington scheduled for 2026. The next is the Sea to Sound in Port Angeles on July 1. Washington half marathons run primarily June through April.

Black Diamond Triathlon

Sat, Jun 27 · Enumclaw, WA Enumclaw

Super SprintSprint RelaySprint +3

From $58 Open Closing Soon

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Sea to Sound

Wed, Jul 1 · Port Angeles, WA Port Angeles

Sea to Sound for Cyclists - Day 1Sea to Sound - Day 1Sea to Sound - Day 3 +8

From $50 Open 25 spots left

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Righteous Richland Sprint Triathlon

Sat, Jul 11 · Richland, WA Richland

Open Relay Team for Righteous Richland Sprint TriathlonRighteous Richland Sprint TriathlonCoed Relay Team for Righteous Richland Sprint Triathlon +1

From $45 Open Closing Soon

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Jack & Jill Marathon & Half

Sat, Jul 25 · North Bend, WA North Bend

Half Marathon SaturdayHalf Marathon SundayMarathon Saturday +1

From $119 Open

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Sullivan Lake Triathlon 2026

Sat, Aug 1 · Metaline Falls, WA Metaline Falls

Youth Super SprintSullivan Lake Triathlon 2026Friends And Family Wave +1

From $55 Open 15 spots left

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Lake Meridian Triathlon

Sat, Aug 15 · Kent, WA Kent

Super SprintSprintOlympic +2

From $65 Open

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2026 Kirk-Wood Half Marathon

Sat, Aug 22 · Kirkland, WA Kirkland

Kirk-Wood Half Marathon

From $75 Open Closing Soon

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Iron Horse Half Marathon

Sun, Aug 30 · North Bend, WA North Bend

Virtual Half MarathonHalf Marathon

From $52 Open 40 spots left

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Redmond Harvest Half Marathon

Mon, Sep 7 · Redmond, WA Redmond

Half Marathon

From $59 Open

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Cascade Express Marathon & Half Marathon

Sat, Sep 12 · North Bend, WA North Bend

Cascade Express Half MarathonCascade Express Marathon

From $119 Open

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Fall - Mud Mountain Dam Marathon & Half Marathon

Sat, Sep 19 · Enumclaw, WA Enumclaw

Fall - Dam Half MarathonFall - Dam Marathon

From $70 Open

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Lake Washington Half Marathon

Sat, Oct 17 · Kirkland, WA Kirkland

Half MarathonVirtual Half Marathon

From $52 Open

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2026 Seattle Ghost Marathon, Half & 50K

Sat, Nov 28 · Seattle, WA Seattle

2026 Seattle Ghost Half Marathon2026 Seattle Ghost Marathon2026 Seattle Ghost 50K

From $120 Open

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Last Chance Marathon and Half Marathon

Thu, Dec 31 · Bellingham, WA Bellingham

Half MarathonMarathon

From $60 Open

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Woolley Trail Runs

Sat, Feb 13 · Sedro Woolley, WA Sedro Woolley

Half MarathonMarathon50k

From $65 Open

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Brooks Lake Sammamish Half Marathon presented by REI

Sat, Mar 6 · Redmond, WA Redmond

Virtual Half MarathonHalf MarathonSaturday Half Marathon +2

From $50 Closed 30 spots left

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Yakima River Canyon Marathon and Half-Marathon

Sat, Apr 3 · Yakima, WA Yakima

1/2 Marathon1/2 MarathonMarathon Early Start +3

From $85 Closed

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