Trail Running calendar near Seattle 2026-2027

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.

A winter trail run at Seward Park offering 4.2 mile and 10k loops through old growth forest as part of the 2026-27 Winter Trail Series. An aid station is on course and dogs are not allowed.

A 4-mile or 8-mile trail run at St. Edward State Park in Kenmore, WA, featuring single-track and shoreline sections. The event is part of the 2026-27 Winter Trail Series and includes an aid station and on-site apparel sales.

A 5 mile and a half marathon take place at Soaring Eagle Regional Park on January 16, 2027. Courses use narrow technical singletrack and a figure eight layout with multiple aid stations and a short groomed gravel section.

Interlaken Icicle Dash on January 30, 2027 at Interlaken Park in Seattle features 5k and 10k trail loops on paved boulevard and dirt trails. It is the final race of the 2026 to 2027 Winter Trail Series.

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

A 100 mile trail race on Orcas Island made of four 25 mile loops, about 26,000 ft of climbing, extensive aid station support, pacer and crew rules, and a Tower Club award for climbers who summit the Mt Constitution tower on every loop.