Trail Running Calendar Washington 2025-2026

Join the Seward Solstice Run at Seward Park Seattle on Dec 20, 2025 with 4.2 mile and 10k forest loop courses as part of the Winter Trail Series. Enjoy scenic trails, aid stations, and a Glitter, Glamour and Galaxy costume contest.

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.

Join fellow coffee and chocolate fans for a scenic 5K or 10K on the Sumner Link Trail in Sumner, WA on January 18, 2026. Celebrate at the finish with Keurig coffee and Puyallup chocolates for a sweet reward.

Join the Get Outside 5k Fun Run on Jan 24 in Burlington for a family friendly run along the Port of Skagit Trails starting at True North Bakery. Proceeds benefit Boys & Girls Clubs of Skagit County and entry includes a free race shirt.

Race the Langlauf 10K at Mount Spokane on Jan 25, 2026 for a friendly wave start on a classic 10K course. Open to ages 1 to 99 with adaptive categories and volunteer guides, this event welcomes skiers of all levels.

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.

Brave the Big Cross Frozen Tundra in Pasco on Jan 31 for a scenic winter cross country challenge on woodchip and gravel trails. Choose 2.5 or 5 mile routes with rolling hills, score a race logo giveaway, and run with all ages.

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.

Run Forest Run at Lake Sylvia State Park near Montesano is a rugged trail race with 25K and 50K loops and about 2,900 feet of climb per loop. Camp on site and enjoy post race food while supporting local trails.

Woolley Trail Runs in Sedro Woolley, Washington offers 50k, marathon and half marathon on a scenic railroad grade gravel trail. Out and back courses, limited aid and parking, so bring your own supplies.

Join the inaugural Song Sparrow Bridge 10K in Sedro Woolley on Feb 14 for a free, untimed trail run through cedar and fir groves, crossing two handcrafted bridges. Enjoy Starbucks warm drinks and a scenic loop on Skagit Trail Builders trail..

Lord Hill Trail Run invites runners to tackle a steep opener and rolling forest trails from 5K to 50K with creek crossings and rocky sections. This cupless race offers handmade finisher awards and supports local trail stewardship.

Run the Rock Solid Marathon or Half Marathon on scenic Whidbey Island, starting and finishing at the historic Captain Whidbey Inn. Coastal roads, trails and beach stretches offer stunning views while proceeds support The Rock Solid Foundati..

Run the scenic Lost Lake 25K through old growth forests, ridgelines and alpine lakes in the Chuckanut Mountains near Bellingham. This point to point trail race mixes runnable miles with technical climbs and offers big views of Mount Baker.

Laliik Trail Races on March 7, 2026 near Benton City Washington offer scenic, challenging trails with distances from 5K to a 6 hour ultraloop. Run to support local trail conservation while enjoying steep climbs and sweeping views.