Trail Running calendar near Shoreline 2026-2027

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, WA on October 31, 2026 featuring single track and dirt roads, about 600 feet of climbing, a pre-race costume contest, a 100-runner limit, and awards for top finishers and masters.

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 multi-distance trail event at Grand Ridge Park near Issaquah, WA offering 5 mile, half marathon, full marathon and 50K options across two looped courses through mossy Cascade foothill forests with stocked aid stations.

Trail running at Carkeek Park in Seattle with 5k and 10k forest courses featuring varied trail widths and rolling to steep sections. The 10k is two laps of the 5k and includes substantial climb.

Experience the rugged coastline and dense forests of Deception Pass State Park on technical single track trails that cross the historic 180 foot high bridge.

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 support December race in Maple Valley, WA offering 50K, marathon and half marathon options. The 21st edition follows river and woods trails and includes a strict 2:30 PM cut-off and a piggy finisher medal.

A roughly 10K trail race at Squaxin Park in Olympia on 12 December 2026 that starts and finishes at Reeves Middle School. Holiday themed aid station, finisher medal and a tree planted for each finisher.

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.

A time based trail event at Fort Steilacoom Park on December 26, 2026 offering 3, 6, and 8 hour options on a 5 mile loop with about 520 feet gain and official aid station support plus handmade finisher awards.

Trail runs at St. Edward State Park offering 4 mile or 8 mile looped courses along singletrack and shoreline. It is the fifth event in the 2026/27 Winter Trail Series and includes an aid station and parking options.

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.

Woolley Trail Runs offers three out and back races along the Cascade Trail near Sedro Woolley WA. Courses run on railroad grade gravel with limited aid stations and several road crossings where runners must watch for traffic.

A 100 mile trail race on Orcas Island run as four 25 mile loops with about 26,000 feet of gain, 15 aid stations, mandatory trail work or donation, and a 36 hour cutoff. Pacers allowed after mile 25 and Camp Moran is race headquarters.

A point to point *25k* trail race in the Chuckanut Mountains near Bellingham, WA, organized by Yeti Trail Runners. The route runs from Lost Lake Trailhead to Larrabee State Park and includes chip timing, aid stations, a race shirt, and a fi..

A lap-based endurance run at Green Lake Park in Seattle using a 3.2-mile counter-clockwise loop. Options include a 12-hour timed race and a 5-hour option; the most laps in 12 hours determines the winner.