Trail Running calendar near Snoqualmie Pass 2026-2027

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.

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.