Trail Running calendar near West Seattle 2026-2027

This point-to-point 25k trail run follows the scenic eastern shore of Baker Lake. Runners are bused to the start to experience old-growth forests and views of Mt. Baker. The autumn setting features unique flora along the route.

A six hour timed trail event on the 2.45 mile Swauk Forest Discovery Loop near Blewett Pass, held in October with a fall themed potluck aid station, raffle and awards. The field is capped at 85 and a post race dinner option is available.

Experience the lush forests and rugged mountain beauty of the Snoqualmie River valley. This trail event offers four distances from 10k to 50k on scenic river valley paths with modest climbing.

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.

Park-based trail event in Seattle offering in-person 12 hour and 6 hour options plus a virtual option in October. The looped 1.93 mile course gains about 436 feet per loop and benefits local trails.

Join this unique Halloween themed relay scramble in Black Diamond. Form a team to track down rogue ghosts and return them to Civic Park in a race that combines running with a scavenger hunt.

Experience the lush forests of the Cascade foothills in this seasonal finale featuring distances from 5 miles to a 50K ultramarathon. Run through golden fall colors and mossy trails in the heart of Grand Ridge Park.

Run on the famously flat and fast Willapa Hills Trail in Washington. This festival offers distances from a 5K to a 100-mile ultramarathon, with a scenic route along an old rail grade. It's a community-focused event with modest entry fees su..

Experience a forested trail run through Carkeek Park with views of the Olympic Mountains. This event offers 5k and 10k distances on a mix of wide and narrow trails as part of the Winter Trail Series.

Experience a forest filled ravine in Seattle at the Ravenna Refresher Trail Run. Choose from a 4k, 8k, or 12k loop through groomed trails in this second event of the Winter Trail Series.

Experience a scenic trail run through the lush forests of the Redmond Watershed Preserve. Choose between a 5 mile or half marathon course featuring well groomed paths and festive holiday spirit.

Experience a low key and community focused running event in Maple Valley. This flat course offers half marathon, marathon, and 50K distances for runners seeking a grassroots atmosphere and personal challenge.

Celebrate the winter season with a 10 km trail run through the forested paths of Squaxin Park. Experience the holiday atmosphere and the natural elements of the Pacific Northwest in this Olympia community event.

Experience a winter trail run through the old growth forest of Seattle's Seward Park. Choose between 4.2 mile and 10k loops featuring a mix of smooth paths and technical lakeside trails.

Experience the natural beauty of St. Edward State Park with a 4 or 8 mile trail run along the shores of Lake Washington. This Winter Trail Series event features scenic forest single track and waterfront views north of Seattle.

Experience a technical trail run through the forests and wetlands of Soaring Eagle Regional Park with 5 mile and Half Marathon options featuring rolling hills and twisty singletrack.

Join the final event of the Winter Trail Series for a 5k or 10k through the beautiful forest of Interlaken Park. Choose between dirt trails and car free paved roads for a unique Seattle running experience.

Celebrate Valentine's Day with a community 5k in Black Diamond featuring unique two person team categories and a cross country style scoring system.