Trail Running calendar near Skykomish 2026-2027

A six-hour loop event on the Swauk Forest Discovery Trail near Blewett Pass in October, limited to 85 runners with a fall-themed potluck aid station, raffle prizes and an optional post-race dinner at Flying Horseshoe Ranch.

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.

The Carkeek 12-Hour is a festive trail run on a challenging 1.93-mile loop in Seattle's Carkeek Park. As the 20th annual event, it's capped at 50 runners and features a Halloween costume contest. All proceeds benefit local trails through th..

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 at the Grand Ridge Trail Run. Choose from distances ranging from a 5 miler to a 50K on a scenic and technical course near Issaquah.

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.

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.

Experience North America's largest ski trail network during this community Nordic event. Ski from the Methow River to Sun Mountain Lodge in a marathon, half marathon, or relay race followed by a festive post race lunch.

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