Trail Running Calendar Washington 2026-2027

Tiger Claw is a multi route trail event on Tiger Mountain near Issaquah on May 8 and 9, 2026. It features a *50k* plus Ascent, Big Cat and Ambush routes, and requires completion of three summit loops within the event cutoff.

Explore the trails of Bainbridge Island. This May event offers 10K and 5K courses through Battle Point Park, the Forest to Sky Trail, and the Grand Forest, plus a Kids Fun Run. All proceeds support local trail development.

A trail race at Cougar Mountain Regional Wildland Park offering 5.1 mile and 10.8 mile courses through forest and marshes near Seattle. Organized by Seattle Running Club and Northwest Trail Runs as part of a 21st annual series supporting Ki..

A 20th anniversary running event in Maple Valley, WA on May 9, 2026, with races from a half marathon to 50K. The riverside, wooded course offers modest support, a piggy medal for finishers, and a strictly enforced cutoff.

Part of the Palouse Road Runners' free summer series, this 10k takes runners on a loop of gravel roads near Albion, WA and the Rose Creek Nature Preserve. It's a low-key community event with results posted online.

Test your endurance in the Chuckanut Mountains with a variety of timed vertical challenges. Complete as many mountain laps as possible to support clean air initiatives and climate change awareness in Washington.

Trail races at Soaring Eagle Regional Park in Sammamish WA offer multiple distances from kids races to a half marathon. Courses start on the Pipeline Trail and follow winding, mostly flat forest singletrack with rooty sections.

Experience a rugged trail race at Green Mountain featuring significant elevation and scenic summit views. Choose between 25k and 50k distances or join the official rucking division for a unique weighted pack challenge.

Experience the single track trails of the Issaquah Alps at Rattlesnake Ridge. Choose between 5k, 5.8 mile, or Half Marathon routes featuring forest climbs and scenic views of the Snoqualmie Valley and Mt Rainier.

A fundraising 4.45 mile run and walk in Sumas, WA on mixed road and trail with steep climbs, descents and obstacles. Proceeds support a local family facing a rare neurological condition. Participants must be 16 or older.

Join this annual run and walk through the scenic habitat of the Columbia Whitetail Deer in Skamokawa. Support local youth programs by choosing from 10k, 5k, or 2 mile distances with your favorite canine companion.

Point to point trail races in Winthrop, Washington on May 16 and 17 2026. Choose 50 mile, 50 km or 25 km courses that finish lakeside at Big Twin Lake Resort with shuttle transport to the starts.

A family-friendly 5K in Wilbur, WA during Wild Bill Goose Days, with a mostly paved out-and-back course, a water station at the turnaround, and age-group and overall awards.

A 27K trail race on the Spokane Indian Reservation near Fruitland, WA, with about 3,400 feet of gain mostly in the first 8.5 miles; the route climbs to Westend Lookout Tower and returns to Anderson Ranch.

A community fundraising event on May 16, 2026 in Fairhaven Park featuring a half marathon, 10K and 3K/6K on nearby trails. Proceeds support Girls on the Run of NW Washington.

A 2.62-mile out-and-back on the paved double-wide trail at Frenchman's Bar Regional Park in Vancouver WA, with on-site gear pick-up, swag, parking for a fee, and a virtual participation option.

A trail running weekend in Leavenworth, Washington featuring races from a town 5K to a two loop 55K. Courses use Ski Hill ridgelines with significant elevation gain, aid stations, festival activities, and awards across multiple divisions.

Test your endurance at this backyard style event in Spokane. Runners complete a four mile loop every hour on a dirt track until only one participant remains standing.

An ultramarathon in Puyallup, WA offering 50 mile and 50k courses along the paved Foothills Trail. The route includes the new White River bridge, multiple aid stations, and a 15 hour cutoff for the 50 mile distance.

Timed loop races on a 1.54 mile scenic Magnuson Park loop offering 7 hour and 13 hour solo options. Chip lap counting, a stocked aid station, included race T shirt and a boxed vegetarian post race meal.