Trail Running calendar near King County 2026-2027

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 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.