You can run a half marathon in Washington in May, June, July, August, September, October, November, and December.
[race_calendar_title]
April 26, 2026
500-1000 runners
[get_race_listing_state_city post_id="122446"]
- 10K, 5k, Half Marathon, Marathon, Road
September 26, 2026
1-100 runners
[get_race_listing_state_city post_id="122200"]
- 10K, 5k, Half Marathon, Road
May 3, 2026
1-100 runners
[get_race_listing_state_city post_id="90496"]
- 5k, Half Marathon, Trail & Road
June 20, 2026
500-1000 runners
[get_race_listing_state_city post_id="122160"]
- 10K, Half Marathon, Trail
July 26, 2026
500-1000 runners
[get_race_listing_state_city post_id="122327"]
- 5k, Half Marathon, Trail
August 30, 2026
100-500 runners
[get_race_listing_state_city post_id="122277"]
- Half Marathon, Marathon, Road
September 24, 2026
1-100 runners
[get_race_listing_state_city post_id="122220"]
- 10K, 5k, Half Marathon, Marathon, Trail & Road
September 12, 2026
100-500 runners
[get_race_listing_state_city post_id="122168"]
- Half Marathon, Trail
September 12, 2026
500-1000 runners
[get_race_listing_state_city post_id="122162"]
- 10K, 5k, Half Marathon, Marathon, Trail
September 12, 2026
100-500 runners
[get_race_listing_state_city post_id="122147"]
- Half Marathon, Marathon, Trail & Road, Ultramarathon
October 11, 2026
500-1000 runners
[get_race_listing_state_city post_id="122328"]
- Half Marathon, Marathon, Trail & Road
May 17, 2026
1,000-10,000 runners
[get_race_listing_state_city post_id="122170"]
- 10K, 5k, Half Marathon, Marathon, Trail
January 31, 2026
1-100 runners
[get_race_listing_state_city post_id="122193"]
- Half Marathon, Marathon, Trail & Road
February 14, 2026
500-1000 runners
[get_race_listing_state_city post_id="122452"]
- Half Marathon, Marathon, Trail
June 7, 2026
500-1000 runners
[get_race_listing_state_city post_id="122161"]
- 10K, 5k, Half Marathon, Marathon, Relay, Trail
March 14, 2026
100-500 runners
[get_race_listing_state_city post_id="122275"]
- 10K, Half Marathon, Trail
May 30, 2026
100-500 runners
[get_race_listing_state_city post_id="153167"]
- 10K, 5k, Half Marathon, Trail & Road
May 9, 2026
100-500 runners
[get_race_listing_state_city post_id="122409"]
- Half Marathon, Road
May 16, 2026
1-100 runners
[get_race_listing_state_city post_id="122217"]
- 10K, Half Marathon, Trail
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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.
