Washington
Washington Trail Running Calendar 2026-2027
Explore the best trail runs in Washington for 2026-2027! Our updated list features 130 exciting trail runs across the region. Find your next trail run in Washington below and join the trail community at these great events!
August 2026
Trail races from Fairhaven Park into Larrabee State Park offering 12K, 25K and 50K courses through forests, lakes and narrow ridgelines with significant elevation gain.
A multi-hour run and ruck event in Spokane with looped dirt trails, self-support expectations, an aid station, youth loop option, and volunteer incentives.
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.
A net downhill marathon and half marathon at Snoqualmie Pass with nine aid stations, finisher medal and bus return to Hyak for the post race celebration.
A 200 mile point to point trail race around Mount St. Helens with 13 aid stations and six sleep stations, organized by Destination Trail, Aug 14–18, 2026.
A 20 miles long single track trail race along Mount St. Helens' southwestern side, starting at Marble Mountain Sno Park, with lava fields, stream crossings and old growth forest.
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, and cupl..
Tartarus Backyard Ultra is a last person standing running and rucking event at Camp 7, Riverside State Park on August 15, 2026. Competitors complete repeated loops with a one hour cutoff per lap until one runner and one rucker finish a final solo loo..
A 24 hour series of hourly group 5K runs at Kearin Family Farm in Bonney Lake with camping, food, music, and a medal and T shirt showing laps completed.
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 Grand Opening at The Course Spokane Valley featuring a youth 3K, men’s and women’s 5Ks plus food trucks and community activations.
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 team trail relay at Crystal Mountain Resort on Aug 21-22, 2026 with alpine loops, significant elevation gain, and a mid-race gondola ride.
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.
A two-race cross country event at The Course in Spokane on August 23, 2026 featuring men's and women's 5K races, age-based entry fees, and awards for top finishers.
Trail races at Mt. St. Helens Science & Learning Center offering 50K, 20 mile and half marathon loops with significant elevation and aid stations.
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.