Trail Running calendar near Seattle 2026-2027

A remote October trail event near Leavenworth featuring **50k** and **50 mile** courses with alpine ridgelines, golden larches, technical single track, significant elevation gain, and cupless aid station support.

A six hour trail running event on the Swauk Forest Discovery Trail near Blewett Pass on October 10, 2026. The 2.45 mile single track loop has about 650 ft of climbing and features a fall themed potluck aid station and a post race dinner opt..

Trail races on the Middle Fork and CCC trails in North Bend, WA, on October 10, 2026. Distances from 10k to 50k feature river valley scenery, aid stations, and some unbridged creek crossings.

A multiformat endurance event at Salt Creek Recreation Area with 12 hour and 24 hour loop options, a relay format, and a Last Runner Standing summit challenge offering coastal views and stocked aid stations.

A looped trail fundraiser at Carkeek Park in Seattle offering timed 12 hour and 6 hour options in person on October 24 2026 and virtually October 1 to 31. The 1.93 mile loop gains 436 feet per lap and entries are capped at 50.

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 10K trail race in Port Gamble, Washington, on single track and dirt roads with about 600 feet of climbing mostly in the first three miles. The event features a costume contest, a tech shirt and medal, awards, and a field limited to 100 ru..

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.

The Grand Ridge Trail Run on November 7, 2026 closes the Evergreen season with multiple trail distances through forested trails at Grand Ridge Park. Courses include 5 Mile, Half, Full Marathon and 50K; aid stations are provided and the even..

A flat, out-and-back trail event in Chehalis with five distances from 5K to 100 miles, packed-gravel surfaces, multiple aid stations, low entry fees, and proceeds supporting the Willapa Hills Trail.

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 feature 50K and 25K courses that cross the Deception Pass Bridge twice, run mostly on single track trails, and include aid stations and timed cutoffs.

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..

Pigtails Run in Maple Valley WA marks its 20th year with riverside and wooded courses across distances from 50K to a half marathon. The event is low support and volunteer staffed, with variable weather and a strict 2:30pm cutoff.

Saturnalia is a holiday themed *10K* trail race at Squaxin Park in Olympia on 12 December 2026, starting and finishing at Reeves Middle School track with a festive aid station, cupless policy, no cutoff, and a finisher medal and gift.

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.

Time-based trail event at Fort Steilacoom Park offering 3 hour, 6 hour, and 8 hour options on a 5 mile loop with 520 feet of gain. Aid station services include food, drinks, and handmade finisher awards.