Which Washington cities have the most ultramarathons?
Bellevue (1), Seattle (1), Port Angeles (1), Nine Mile Falls (1) lead the state for Ultra races. Those give you the most dates to choose from if your schedule is tight.
Washington · Ultra
2026-2027 Ultramarathons in Washington
Every upcoming Ultra in Washington, all 6 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
6 upcoming ultramarathons · 2 with finish-time stats
By the numbers
The Biggest and Longest-Running
The Washington races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
Washington Ultramarathons by City
The Next Ultra Marathons in Washington
6 total Sat, Oct 31, 2026Cougar Mountain Trail Run Series (October) Bellevue, WAFrom $100Details Sat, Nov 28, 20262026 Seattle Ghost Marathon, Half & 50K Seattle, WAFrom $150Details Sat, Apr 10, 2027OAT Run Port Angeles, WAFrom $93Details Sun, Apr 25, 2027Spokane River Run 2027 Nine Mile Falls, WARegistration opens Nov 1From $78Details Sat, Jun 5, 2027FORGE Anacortes, WARegistration opens Nov 30From $149Details Sat, Jun 19, 20272027 Centennial 100 Snohomish, WAFrom $125Details
How we calculate these stats: RunSesh calculates these figures from the most recent published results of past editions, sourced from RunSignup. We show aggregates only: field size, winning and median times, and the cutoff. We never publish individual finisher tables. Last updated Oct 25, 2026.
Common Questions About Running an Ultra in Washington
When are most ultramarathons held in Washington?
April is the busiest month for Ultra races in Washington, with 2 of the 6, followed by June with 2. If you are flexible on the date, that is the quickest way to narrow things down.
Are there trail Ultra races in Washington?
Yes, 3 races around Washington get you off the pavement: 3 are trail races.