You can run a half marathon in Washington in May, June, July, August, September, October, November, and December.
[race_calendar_title]
May 9, 2026
1-100 runners
[get_race_listing_state_city post_id="122197"]
- Half Marathon, Road
June 7, 2026
500-1000 runners
[get_race_listing_state_city post_id="122450"]
- Half Marathon, Trail & Road
June 13, 2026
500-1000 runners
[get_race_listing_state_city post_id="122172"]
- Half Marathon, Road
May 31, 2026
100-500 runners
[get_race_listing_state_city post_id="122149"]
- 10K, Half Marathon, Trail, Ultramarathon
June 20, 2026
1-100 runners
[get_race_listing_state_city post_id="153192"]
- Half Marathon, Marathon, Trail
May 31, 2026
100-500 runners
[get_race_listing_state_city post_id="92840"]
- Half Marathon, Trail & Road
August 29, 2026
100-500 runners
[get_race_listing_state_city post_id="153225"]
- Half Marathon, Trail
September 20, 2026
1,000-10,000 runners
[get_race_listing_state_city post_id="122389"]
- Half Marathon, Trail & Road
September 19, 2026
100-500 runners
[get_race_listing_state_city post_id="122167"]
- 5k, Half Marathon, Marathon, Trail & Road
September 5, 2026
1-100 runners
[get_race_listing_state_city post_id="122119"]
- 10K, Half Marathon, Marathon, Trail & Road
February 28, 2026
100-500 runners
[get_race_listing_state_city post_id="122286"]
- 10K, 5k, Half Marathon, Road
May 17, 2026
100-500 runners
[get_race_listing_state_city post_id="122412"]
- Half Marathon, Marathon, Trail & Road
May 16, 2026
100-500 runners
[get_race_listing_state_city post_id="122416"]
- 10K, 5k, Half Marathon, Trail
June 6, 2026
1-100 runners
[get_race_listing_state_city post_id="122357"]
- Half Marathon, Trail
August 29, 2026
1-100 runners
[get_race_listing_state_city post_id="122367"]
- 10K, 5k, Half Marathon, Trail & Road
August 30, 2026
1,000-10,000 runners
[get_race_listing_state_city post_id="122387"]
- Half Marathon, Trail & Road
March 28, 2026
100-500 runners
[get_race_listing_state_city post_id="153246"]
- Half Marathon, Marathon, Road
August 23, 2025
100-500 runners
[get_race_listing_state_city post_id="153220"]
- 10K, 5k, Half Marathon, Trail
August 9, 2025
100-500 runners
[get_race_listing_state_city post_id="90938"]
- 10K, 5k, Half Marathon, Trail & Road
June 28, 2025
100-500 runners
[get_race_listing_state_city post_id="153206"]
- 10K, 5k, Half Marathon, Trail & Road
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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.
