Trail Running calendar near Sammamish Valley 2026-2027

We have found 122 Trailruns within 80 miles of Sammamish Valley. See below where and when you can find the races.

Challenge yourself on the historic stairs of Tacoma at the Unleashed at Stadium Bowl. Choose from one or two laps totaling up to 3256 steps to support local animal rescue efforts.

Trail races from Fairhaven Park into Larrabee State Park featuring forest singletrack, lake views, ridge running and technical terrain across 50K, 25K, 12K and a kids race.

Experience the lush forests and single track trails of Bellevue in this eco friendly trail series. Choose from three distances ranging from a 5K to a full marathon while supporting King County Parks.

The Race the Reserve Whidbey Island will take place in Coupeville on Saturday 8 August 2026. You can run between 5 and 13 miles.

A mostly downhill rail-trail marathon and half marathon through the Snoqualmie Tunnel and mountain scenery. Both races will be USATF certified and the marathon will be a Boston qualifier; packed gravel surface and shuttle service are provid..

Multiple distances in the Olympic National Forest near Quilcene on August 15 and 16, 2026. Courses feature technical single track, substantial climbing and staffed aid stations across 10K to 100K options.

Experience an evening run at Chambers Bay with stunning views of Puget Sound. Choose between 5k, 10k, or half marathon distances on a scenic paved loop featuring rolling hills and sunset vistas.

Point to point trail race near Cle Elum, Washington offering a 50K and 50 mile route along Kachess Ridge and Thorp Mountain with remote sections and aid stations up to 12 miles apart.

September 2026

A multi-day ultrarunning festival at Kearin Family Farm near Bonney Lake, WA, featuring looped 3.1 mile laps and a central Race HQ. Events range from a 200 mile race to 6 hour, 12 hour, and 24 hour formats with on-site camping.

Trail races of 28 km, 50 km, 50 miles and a double option run from Goldstream Provincial Park near Victoria BC. Routes follow single and double track through Arbutus and old growth forest with substantial elevation gains.

Traverse the scenic Kelly Ridge on single track trails between Olympic National Park and the Strait of Juan de Fuca. Choose from three distances finishing at the clear waters of Lake Crescent.

Cascade Express Marathon and Half in Snoqualmie Pass, WA features a USATF certified marathon with 1,247 feet of net downhill and a national number 5 Boston Qualifier ranking. The course runs through the Snoqualmie Tunnel corridor.

Experience a flat out and back course through mossy evergreen forests along the Snoqualmie valley trail. Choose from four different distances starting at Tolt MacDonald Park in the town of Carnation.

Coal Miner is a rugged, self-supported 51.3-mile trail run through the mountains near Roslyn, WA. With no course markings and minimal aid, it demands strong navigation skills and mountain readiness. Finishers must provide summit selfies and..

Fourth annual 5K at Illahee Preserve in Bremerton held during National Recovery Month. Proceeds support the Salish Recovery Coalition and participants receive event swag, a custom finisher medallion, coffee and donuts.

A marathon and half marathon on September 13, 2026 at Hyak Snoqualmie Pass featuring a packed gravel course with about 1,000 feet of net downhill and a run through the Snoqualmie Tunnel; the marathon is a USATF certified Boston Qualifier.

Experience an obstacle course championship weekend at Meadow Wood Equestrian Center. Choose from several distances through evergreen trails and narrow paths between the Cascade Mountains and Puget Sound.

A 7.9 mile trail race at Crystal Mountain, Washington with about 2,614 feet of vertical gain, three competition divisions offering cash and gear prizes, and season points awarded to the top 20. Field capped at 700 entries.

Remote ultra events near Leavenworth, WA feature the Plain 100K and Plain 100 Mile on USFS trails and roads with about 21,000 feet of elevation change and self-support requirements.

Experience a 70 mile trail relay divided into 12 scenic legs across Moran State Park on Orcas Island. Form a team of two to six runners to tackle diverse terrain and the summit of Mount Constitution over two days.