Trail Running calendar near Sammamish Valley 2026-2027

Kick off 2026 with Absolution Run at St Edward State Park in Kenmore on January 3, offering scenic 4 mile and 8 mile trail loops along Lake Washington. Expect swooping single track, a lakeside descent and a well stocked aid station.

Take on the Race to the Top of Mount Si on January 3, 2026, a steep 3.7 mile trail climb with 4,167 feet of vertical gain to the Rock Garden. Enjoy aid stations, a finisher shirt and medal, and fierce competition for the Golden Si award.

Bridle Trails Winter Running Festival in Kirkland offers looped races from 5 miles to 50 km solo or relay on scenic but muddy winter trails. Come solo or as a team and remember your own cup and a headlamp.

Tackle technical singletrack and rolling hills at the Frost Eagle Trail Run in Soaring Eagle Park on January 17. Pick a 5 mile or half marathon figure eight course with frequent aid stations and a lively winter trail vibe.

Run 17 or 34 miles on rugged Capitol State Forest trails in a low support Fat Ass format. Expect winter conditions, be self supported, and enjoy soup while supporting local forest and search and rescue.

Run a scenic 5K or 10K through Pierce College and nearby parks in Puyallup on January 18, 2026, then celebrate with freshly brewed coffee and handcrafted chocolate. Early registration pricing ends December 31, 2025.

Join the 2026 Get Outside 5k Fun Run in Burlington, WA on January 24 for a chip timed community 5k along wooded trails beside the airport. Enjoy a free race shirt with registration and support the Boys and Girls Clubs of Skagit County.

Run the Interlaken Icicle Dash through Seattle's wooded Interlaken Park on January 31, 2026, with 5k and 10k loop options. As the final Winter Trail Series race, expect scenic climbs, a festive aid station, and a welcoming trail community.

Join the West Seattle Beach Run Fat Ass on Sunday, Feb 8, 2026 for a scenic marathon or half along Elliott Bay and through Lincoln Park. Enjoy waterfront views, skyline sights, and a friendly grassroots vibe on this out and back course.

Join the Trio Trail Run February at Frontier Park in Graham on Feb 8, 2026 for a relaxed, laid back trail morning. Choose 2.5 km or a two loop 5 km course, with pre registration discounts for youth and day of race sign up available.

Run rolling trails through forested kettle terrain with bluff top views of the Strait of Juan de Fuca at Fort Ebey State Park on Whidbey Island. Options from 5 km to marathon with a finisher medal included.

Woolley Trail Runs on February 14 in Sedro Woolley features 50k, marathon and half marathon on the scenic Cascade Trail. Courses are out and back on railroad grade gravel with limited aid so bring water. Parking is limited.

Celebrate Valentine's Day at the inaugural Song Sparrow Bridge run in Sedro Woolley with 10K and 4 Mile routes over new trails and two handcrafted bridges. Free entry, mass start, run at your own pace with muffins and Starbucks drinks.

Celebrate Valentine's Day with the Ten Trails Active Club Heartfelt Hustle, a free 5K community run in Black Diamond on Feb 14. Team entries, costumes, hand timed results and post race snacks make it a festive and friendly outing.

Challenge yourself on Lord Hill's rugged trails with options from 5K to a 50K ultramarathon, featuring a sustained opening climb and technical singletrack with creek crossings. This cupless event rewards every finisher with a handmade solar..

Take in beach and island views while racing the second annual Rock Solid Marathon or Half Marathon in Coupeville, WA. All finishers get a custom shirt and medal and proceeds benefit The Rock Solid Foundation.

The Lost Lake 25K takes you point to point through old growth evergreens and ridgelines in the Chuckanut Mountains near Bellingham, WA. Expect runnable miles, scenic views of Mount Baker and Bellingham Bay, and a mix of climbs and smooth de..

Join the laid back Trio Trail Run on March 8, 2026 at Frontier Park in Graham for fun, relaxed trail races. Pick a short 2.5K or scenic 5K two loop course and enjoy family friendly entry with youth discounts and day of race signups.

Tackle rolling, rooty trails at Lord Hill Park on March 14 for the Pie High Trail Run, offering 5K, 10K and half marathon distances. Expect big climbs, mossy forest views and a rugged, rewarding trail experience for all levels.

Run beachfront trails at Dash Point State Park with 10K and half marathon options through lush forest and mossy singletrack. Expect rolling climbs, a sandy beach start, and a handmade finisher item made using solar power.