Trail Running Calendar Washington 2026-2027

A costumed community event at Lincoln Park featuring a trail 5K, kids dashes, and a virtual shirt option to support South Seattle College Cooperative Preschools. Registration includes a Monster Dash shirt and the 5K includes a timed bib.

An evening team relay in Ten Trails where teams of one to three hunt and return six hidden ghosts in Civic Park; free registration, prizes for fast finish, best team name, and best costume.

A trail 10K in Port Gamble with single track, dirt roads and about 600 feet of climbing. The event includes a costume contest, entry-limited field and awards for top open and masters finishers.

Trail races at Cougar Mountain Regional Wildland Park near Seattle, offering 5k, 7.6 mi, 19.5 mi and 50k courses on varied single-track and groomed trails, with substantial elevation gain and proceeds supporting King County Parks.

The final race of the Evergreen trail season at Grand Ridge Park offers 5 Mile, Half Marathon, Full Marathon and 50K options on forested trails with technical climbs, aid stations and cupless race rules.

Trail half-marathon and 5K in Klickitat, WA along the Klickitat River; a non-profit fundraiser supporting the local school district and community center with shuttles, aid stations, and volunteer support.

Flat out and back trail races on the Willapa Hills Trail near Chehalis, WA offering distances from 5K to 100 miles. Organized by OlyTrailRunners with aid stations, parking, camping options, and low entry fees.

A forested trail run at Carkeek Park in Seattle offering 5k and 10k courses with rolling and steep sections, an aid station at the start, and a youth discount for runners under twenty. Dogs are not allowed on the course.

Trail races at Deception Pass State Park on November 7 and 8 featuring 50K and 25K courses with coastal and bluff views, technical single track, aid stations, a kids 1K loop, and nearby camping options.

A 50K trail run at Riverside State Park near Spokane offering rolling river trails, rocky and forested sections, and prairie views; camping is available at the Seven Mile Airstrip.

Wild Moose Chase on November 8, 2026 in Nine Mile Falls offers 25K, 10K, 5K, a kids run for ages 1 to 12, and a virtual option along Riverside State Park trails while raising funds for Eastern Washington University's Department of Physical..

Celebrate Veterans 5K in Tacoma, WA is a community run and walk on November 15, 2026 at Pipeline/Orange Gate Park that honors veterans and supports Project Recover. Registration includes chip timing, a commemorative medal, race photos, and..

Ravenna Refresher is a trail run at Ravenna Park in Seattle offering 4k, 8k, and 12k on a 4.1 km loop through forested ravine. The event includes an aid station, a youth discount, and is part of the Winter Trail Series.

A 7-mile single-track trail race at Dog Mountain in the Columbia River Gorge that climbs about 3 miles and 3,000 ft to the summit, then descends roughly 4 miles, with mountain and river views plus on-site food and awards.

An Everesting-style run at Badger Mountain Westgate Trailhead in Richland, WA, on a 0.35 mile loop with 89 m gain per lap. Multiple lap targets correspond to mountain-equivalent elevations; awards and on-site food are provided.

Trail run at Redmond Watershed Preserve offering 5 mile and half marathon options on mostly wide, smooth trails. The half marathon repeats a 6.55 mile loop and includes two aid stations; a Winter Wonderland costume contest is part of the ev..

A low cost, low key running event in Maple Valley, WA on December 12, 2026 offering 50K, marathon and half marathon distances with limited on course amenities and a grassroots volunteer atmosphere.

A 10K trail race through Squaxin Park in Olympia, Washington, on December 12, 2026. Start and finish are at Reeves Middle School, times are tracked but there are no podiums and all finishers receive awards.

A forested loop at Seward Park offers 4.2 mile and 10k trail options as part of the Winter Trail Series, with an aid station near the start finish and a themed costume contest.

An endurance run at Fort Steilacoom Park where runners choose 3, 6 or 8 hour events on a 5 mile loop with 520 feet of gain. Aid stations provide drinks, light food, warm beverages, and handmade finisher awards.