Trail Running calendar near Sammamish 2026-2027

We have found 83 Trailruns within 80 miles of Sammamish. See below where and when you can find the races.

Mountain trail races near Mt Rainier offering 50M, 50K and 25K courses with significant climbs, multiple aid stations and primitive camping at Ranger Creek Campground.

Run the Trestle in Maple Valley on July 25, 2026 offers a USATF sanctioned half marathon (13.1 miles), 10K and 5K on a hard packed limestone trail with shaded sections. Registration includes a race T shirt and a finisher medal.

August 2026

Two mountain trail races on Mount Ellinor in early August 2026, featuring a 24 km Skyrace in the Skyrunner World Series and a 10 km Forest Loop.

A loaded trail event at Esmeralda Trailhead in Cle Elum, Washington on August 1, 2026. Two options: a 13 mile route with 4,406 ft elevation gain and a 9 mile mini with 2,831 ft, each requiring a 20 lb dry load.

Stair races and walks at Stadium Bowl in Tacoma with one lap and two lap options, a Heroes Race with weighted vests, and proceeds supporting Kindred Souls Foundation. Open to participants aged eight and up with guardian supervision for mino..

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.

A road race on Whidbey Island through Ebey’s National Historical Reserve offering 5K, 10K and a half marathon on hilly, scenic roads. Proceeds support safe and sober graduation activities for Coupeville High School Class of 2027.

Tunnel Vision Marathon & Half Marathon on August 9, 2026 near North Bend WA features a mostly downhill, USATF certified rail-trail with about 1,000 feet net elevation drop and a marathon that qualifies for Boston.

Timed endurance event on August 15, 2026 in Lincoln Park, Seattle, where runners cover as many laps as possible on an about two-mile shoreline-and-forest loop. Features a team Battle of the Run Club, kids Loopy races, festival-style support..

A 24 hour festival of hourly five kilometer races at Kearin Family Farm in Bonney Lake, WA. Runners may complete between one and 24 laps and can camp on site while enjoying music, food, and games.

Olympic Mountains Trail Race Festival in Olympic National Forest offers 100K, 50K, 25K, 10K and ruck divisions on mountain single track and forest roads.

Looped 5K, 10K and half marathon on the paved Chambers Bay Loop Trail in University Place with varied terrain and bay views.

A community 5K run or walk at Lake Padden Park on August 16, 2026 raising funds for rescue dogs through the volunteer group Happy Tails Happy Homes.

A multi-day trail relay at Crystal Mountain on August 21-22, 2026 featuring alpine loops, mountain views, a mid-race gondola ride, and teams averaging 15.6 miles per runner.

Point-to-point trail run along Kachess Ridge with alpine ridgeline views and Thorp Mountain Lookout, finishing at Salmon La Sac SnoPark, offered as 50K or 50M.

Join this summer event at Magnuson Park in Seattle featuring traditional road races and an obstacle dash. Choose from distances ranging from a kids 400m to a 15k run in a beautiful Pacific Northwest setting.

September 2026

A multi-distance trail weekend in early September 2026 through the Dark Divide Roadless Area in the Washington Cascades, featuring a 100 Mile race with a 48 hour cutoff, a new point to point 100K, a 50K and a 14 Mile Fun Run.

Multi-day ultrafestival in Bonney Lake with 3.2 mile looped laps, a central aid station, free adjacent camping, and events from 6 hour to 100 mile.

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.

A point to point marathon and half marathon on the Palouse to Cascades Trail in North Bend, WA, featuring downhill profiles, a Snoqualmie Tunnel section, lake views, USATF certification and timed race services.

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