Trail Running calendar near Siler 2026-2027

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, marathon and 50K routes. Courses use two loops, include significant elevation gain, aid stations, and are held as a cupless race.

A nonprofit trail event in Klickitat, WA, featuring a half marathon and 5K along the Klickitat River, shuttle access to trailheads, aid stations, post-run chili with a vegetarian option, and awards for top finishers.

A flat out and back trail festival on the Willapa Hills State Park Trail in Chehalis WA, offering distances from 5K to 100 miles with multiple aid stations and nonprofit race organization.

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.

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..

Trail races at Ravenna Park on November 21, 2026 with 4k, 8k and 12k options on a 4.1 km forest loop featuring moderate climbs and an aid station offering water and snacks.

A 7 mile single track trail race on Dog Mountain near Carson, WA with a steep 3 mile, 3000 ft climb to the summit and a 4 mile downhill finish. Awards, on site food and beer, and well behaved dogs are welcome.

Pigtails Run #21 is a low key trail event in Maple Valley on 12/12/2026 offering half marathon, marathon and 50K options. The mostly paved course has marked turnarounds, manned aid stations, and limited race support.

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 forest loop at Seward Park on December 19, 2026, offering **4.2-mile** and **10k** trail distances, an aid station, and a Glitter, Glamour, and the Galaxy costume contest as part of the Winter Trail Series.

A community holiday running event in Camas on December 19, 2026 featuring a 5k and a Dirty Santa 10k trail run, with post-race cookies, cocoa and a visit from Santa.

Timed endurance event at Fort Steilacoom Park on Dec 26, 2026 with 3, 6, and 8 hour options on a 5 mile loop with 520 ft of gain.

A fundraiser in La Center with 5K and 10K run/walk courses that start and finish at La Center High School, followed by a pancake breakfast benefiting the high school volleyball program and awards for top finishers.

A Winter Trail Series event at Soaring Eagle Regional Park on January 16, 2027 offering 5 mile and Half Marathon courses on rolling, technical singletrack with multiple aid stations.

Interlaken Icicle Dash at Interlaken Park in Seattle on January 30, 2027 offers 5k and 10k trail races as the final event of the 2026/27 Winter Trail Series. The course uses a 2.5 km loop on paved boulevard and dirt trails.

A loop-based endurance run at Green Lake Park in Seattle where runners complete as many 3.2 mile laps as possible in timed formats. Events are offered in 12 hours and 5 hours.

Scenic trail races through the Columbia River Gorge staged at Marine Park in Cascade Locks, offering 100K, 50K and 30K distances, on-site Thunder Island camping, chip timing, stocked aid stations, and a $75,000 prize purse.

A 50K out and back trail race near the Yakima River Canyon with about 9,200 ft of elevation gain, exposed high desert terrain, aid stations, and primitive on-site camping.

Out and back 25K trail run near Ellensburg, WA with 4,700 feet of elevation gain, two aid stations, mandatory 32 oz water carry and primitive on-site camping.