Trail Running calendar near West Seattle 2026-2027

A two day 70 mile trail relay at Moran State Park on Orcas Island, run over twelve legs by teams of two to six. The course moves through forests, lakeshores, wetlands and the 2,399 foot Mount Constitution summit.

Ultra Fest in Easton, WA offers ultramarathon distances from 25K to 100 miles on a course in the Central Cascades. Packet pick-up and day of registration are available and all entries are final.

Remote mountain ultraruns near Cle Elum WA offering 100 mile, 50 mile and 50K routes on rocky trails with large elevation gain. Mandatory kit, spaced aid stations, and a trail work or donation requirement apply for 100 mile entrants.

A fantasy themed 5K walk and run at Magnuson Park with mixed trail surfaces, Villain Zones, and a Heroes Village; costumes encouraged and leashed dogs and strollers welcome.

Trail races at Deception Pass State Park on September 26, 2026 feature 5 mile, half marathon, and full marathon courses that loop along shorelines, cross the Deception Pass Bridge, and start and finish at Bowman Bay.

A two-day trail festival in North Bend, Washington on October 3-4, 2026 featuring a 30K with big vertical gain, a 1,000 m vertical kilometer, a 10K, and a combined double event across iconic Mount Si terrain.

A last-person-standing backyard ultra on October 3rd, 2026 where a $100 bill is added to the prize jar each lap; the winner and runner-up split the accumulated pot 75/25 and 24 laps earns a 100-mile buckle.

Baker Lake Classic 25k on Sunday October 4, 2026 is a 25k event organized by NW Endurance Events. Registration closes October 3 and the entry fee is $80 with a race shirt offered for $25.

The North Bend Skyline 30K will take place in North Bend on Monday 5 October 2026.

A six hour trail running event on the Swauk Forest Discovery Trail near Blewett Pass on October 10, 2026. The 2.45 mile single track loop has about 650 ft of climbing and features a fall themed potluck aid station and a post race dinner opt..

Trail races on the Middle Fork and CCC trails in North Bend, WA, on October 10, 2026. Distances from 10k to 50k feature river valley scenery, aid stations, and some unbridged creek crossings.

Community run at PLU Meadows Disc Golf Course offering a 1K kids run and a 5K. Proceeds support local youth running programs and a college scholarship.

Dicks A Thon in Seattle on October 17, 2026 pairs running with visits to Dick's Drive In locations to sample menu items while raising funds for the Mountaineers, several search and rescue teams, and Washington parks.

Experience the beauty of the Olympic Peninsula at Salt Creek 24. Choose between 12 or 24 hour solo runs, relay teams, or a Last Runner Standing trail challenge overlooking the Strait of Juan de Fuca.

A looped trail event at Carkeek Park in Seattle offering 12 hour and 6 hour options on a 1.93 mile loop with 436 feet of gain per loop. In person on October 24 with a virtual option October 1 to 31 and a 50 runner cap.

A costumed community event at Lincoln Park featuring a trail 5K, kids dashes, and a virtual shirt option to support South Seattle College Cooperative Preschools. Registration includes a Monster Dash shirt and the 5K includes a timed bib.

An evening 5K glow run/walk through trails and around barns at Northern State Recreation Area, featuring spooky elements and trail hazards. Early registration and limited medals and goodie bags are available.

An evening team relay in Ten Trails where teams of one to three hunt and return six hidden ghosts in Civic Park; free registration, prizes for fast finish, best team name, and best costume.

A 10K trail race in Port Gamble, WA on October 31, 2026 featuring single track and dirt roads, about 600 feet of climbing, a pre-race costume contest, a 100-runner limit, and awards for top finishers and masters.

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.