You can run a half marathon in Washington in May, June, July, August, September, October, November, and December.
Upcoming Half Marathons Near Tukwila, WA
Looking for a half marathon in Tukwila, Washington? Browse the most comprehensive Tukwila half marathon calendar with each race history, course description, difficulty rating, finisher ranges, scenery, and what the race is perfect for like family-friendly or lots of crowd support.
You’ll also be able to find must-know race logistics like pricing, start time, and course maps.
Half marathons are always coming and going. If you don’t see a race on the Tukwila half marathon calendar, you can contact us at [email protected].
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
May 17, 2026
1,000-10,000 runners
Spokane, Washington
- 10K, 5k, Half Marathon, Marathon, Trail
Featured Race
March 15, 2026
1,000-10,000 runners
Spokane, Washington
- 10K, 5k, Half Marathon, Road
Featured Race
April 12, 2026
500-1000 runners
Spokane, Washington
- 10K, 5k, Half Marathon, Trail
December 13, 2025
1,000-10,000 runners
Tacoma, Washington
- 10K, 5k, Half Marathon, Road
December 13, 2025
1-100 runners
Maple Valley, Washington
- Half Marathon, Marathon, Trail & Road, Ultramarathon
January 17, 2026
1-100 runners
Seattle, Washington
- 10K, 5k, Half Marathon, Road
January 31, 2026
1-100 runners
Tukwila, Washington
- Half Marathon, Marathon, Trail & Road
February 7, 2026
1-100 runners
Tukwila, Washington
- Half Marathon, Road
February 8, 2026
100-500 runners
Seattle, Washington
- 10K, 5k, Half Marathon, Road
March 7, 2026
1-100 runners
Lakewood, Washington
- 10K, 5k, Half Marathon, Road
March 7, 2026
1,000-10,000 runners
Redmond, Washington
- Half Marathon, Trail
March 8, 2026
500-1000 runners
Kirkland, Washington
- Half Marathon, Trail & Road
March 14, 2026
100-500 runners
Kent, Washington
- 10K, Half Marathon, Trail
March 21, 2026
100-500 runners
Federal Way, Washington
- 10K, Half Marathon, Trail
March 28, 2026
1,000-10,000 runners
Seattle, Washington
- 10K, Half Marathon, Marathon, Road
April 18, 2026
1-100 runners
Kitsap, Washington
- Half Marathon, Marathon, Trail & Road
April 18, 2026
1-100 runners
Seattle, Washington
- 10K, 5k, Half Marathon, Trail & Road
April 18, 2026
1-100 runners
Issaquah, Washington
- Half Marathon, Trail, Ultramarathon
May 3, 2026
500-1000 runners
Tacoma, Washington
- 5k, Half Marathon, Marathon, Trail & Road
May 3, 2026
1-100 runners
Kirkland, Washington
- 5k, Half Marathon, Trail & Road
May 16, 2026
100-500 runners
Sammamish, Washington
- 10K, 5k, Half Marathon, Trail
June 6, 2026
1-100 runners
Kent, Washington
- Half Marathon, Marathon, Relay, Trail & Road
June 6, 2026
1-100 runners
Maple Valley, Washington
- 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 2025?
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.
