Trail Running calendar near Sedro-Woolley 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.

Trail race in Chilliwack along the Vedder River offering a looped half marathon, a 10K and a kids run while directing a portion of registrations to local trail and youth initiatives.

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 mile, 19.5 mile and 50k courses through forested single track, rolling hills and marshes. Proceeds support King County Parks.

A Halloween-themed running event at Swangard Stadium on October 31, 2026 with a chip-timed 5 km and a 400 m Mini Monster Dash for children, costume-friendly with medals for youth and post-race refreshments.

Trail half marathon, 10K and 5K at Sasamat Trail on November 1, 2026 supporting first responders and fundraising for mental health and veterans organizations. Race entries include a shirt, finisher medal and chip timing when minimums are me..

Held November 7, 2026 in Issaquah, WA, Grand Ridge Trail Run offers four looped forest distances with substantial elevation gain. Aid stations provide food and drink and the event is cupless, so runners must carry refillable containers.

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 November trail race on North Shore routes offering 12 km, 19.5 km and 25 km distances, on-site aid stations and a food drive for the local food bank. Expect technical trails, muddy sections and possible creek crossings.

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..

Pigtails Run in Maple Valley, WA marks its 20th year with distances from a half marathon to 50K. The low-cost event follows a riverside, wooded course, has limited support, and includes a piggy medal and cake celebration.

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.

Experience the Vancouver Trail Run at Grouse Mountain with 10 mile and 50 mile mountain courses. Join this North Vancouver event to explore iconic Pacific Northwest trails.

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 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.