Half Marathons in Washington

Name: Seattle Marathon Summer 5K, 10K & Half Marathon
Start: 2026-06-27
End: 2026-06-27
Location: Seward Park

Races by State
Washington
Half Marathon

Browse Half Marathon races in Washington, including upcoming races and races up to one year past their event date. Sort by highest rating or number of reviews to elevate the most popular races.

For each Half Marathon race, you’ll find key details, finisher ratings and reviews, photos, videos, related articles, race-day weather data and a link to register.

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Half Marathons in Washington

Showing Half Marathons in Washington

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