You can run a half marathon in Washington in May, June, July, August, September, October, November, and December.
Upcoming Half Marathons Near Olympia, WA
Browse all Washington Half Marathons in 2026 and 2027 by month and by City below. For each race, you’ll find the history of the half marathon and the course, the most recent year’s course maps, elevation profiles, runner reviews, pricing, and how to sign up.
We dedicated dozens of hours every month searching for races to include in the Washington Half Marathons calendar. If you happen to see any half marathon not included, contact us at [email protected] to submit your race.
Filter Washington Half Marathons
Race Size
Difficulty
Scenery
Type
Perfect For
Distances
Filter Washington Half Marathons
Race Size
Difficulty
Scenery
Type
Perfect For
Distances
Featured Race
July 18, 2026
1,000-10,000 runners
Ashford, Washington
- Half Marathon, Trail & Road
Featured Race
May 16, 2026
1,000-10,000 runners
Ogden, Utah
- 5k, Half Marathon, Marathon, Road
June 14, 2026
1-100 runners
Olympia, Washington
- Half Marathon, Marathon, Road
July 18, 2026
100-500 runners
Olympia, Washington
- Half Marathon, Trail & Road
August 15, 2026
100-500 runners
University Place, Washington
- 10K, 5k, Half Marathon, Trail
November 8, 2026
100-500 runners
University Place, Washington
- 10K, 5k, Half Marathon, Trail
Running in Washington
FAQ
What are the most popular Washington half marathons?
The most popular Washington half marathons are the Seattle Half Marathon with 3,109 finishers in 2023. Followed by the Mount Rainier Half Marathon with 1,391 finishers in 2023.
What are the best Washington half marathons for beginners in 2026?
The Washington half marathons that we recommend most frequently for beginners are the:
Seattle Half Marathon: A large, well produced half marathon with a course around downtown Seattle and Green Lake.
Mount Rainier Half Marathon: A moderate course with 900 ft of elevation gain, with gorgeous views of Mt. Rainier, and a generous four hour time limit.
Iron Horse Half Marathon: A course along Olallie State Park finishing in North Bend with scenery of the river and woods with the entire thirteen miles downhill.
Which months can I run a half marathon in Washington?
Which Washington cities have half marathons?
You can run Washington half-marathon events in Anacortes, Ashford, Bainbridge Island, Bellingham, Bothell, Buckley, Burlington, Carnation, Chelan, Clarkston, Friday Harbor, Gig Harbor, Grand Coulee, Issaquah, Kennewick, Kent, Kirkland, Leavenworth, Long Beach, Maple Valley, North Bend, Ogden, Olympia, Port Angeles, Poulsbo, Puyallup, Quilcene, Redmond, Richland, Sammamish, Seattle, Sequim, Snohomish, Snoqualmie, Snoqualmie Pass, Spokane, Tacoma, Tieton, University Place, Vancouver, Walla Walla, Washougal, Wenatchee, White Salmon, and Zillah.
