Trail Running calendar near Downtown Seattle 2026-2027

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.

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.

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.

A 4-mile and 8-mile looped trail run at St. Edward State Park featuring single-track, lakeshore running, an on-course aid station, and alternate parking at Bastyr University. Part of the 2026-27 Winter Trail Series.

Trail runs of 5 mile and Half Marathon at Soaring Eagle Regional Park in Sammamish, WA. Courses use technical singletrack and a Pipeline Trail section with aid stations and rolling short hills.

Interlaken Icicle Dash features 5k and 10k trail loops through Seattle's wooded Interlaken Park as the final event of the 2026-27 Winter Trail Series, with on-course aid and street parking near 21st Ave E and E Interlaken Blvd.

A community 5K in Black Diamond, Washington on February 13, 2027 with free registration, a capped field, and team based prize categories. The open, hand timed course includes post-race snacks and coffee sales to support the club.

A 100 mile trail race on Orcas Island run as four 25 mile loops through old growth forest and steep climbs. Variable winter weather and about 26,000 feet of elevation pair with extensive aid station support and looped race logistics.

A 25k point to point trail run near Bellingham, WA, through the mossy Chuckanut Mountains from Lost Lake Trailhead to Larrabee State Park Amphitheater, with runnable singletrack, ridgelines, and lake views.

A Spartan obstacle weekend at Meadow Wood Equestrian Center on May 1 and 2, 2027, offering Sprint 5 km and Super 10 km race options, plus kids races and spectator access.