Trail Running calendar near Burlington 2025-2026

Join the Redmond Reindeer Romp on Dec 6, 2025 at Redmond Watershed Preserve with 5 mile and half marathon options. Run scenic forest trails with gentle hills and earn Winter Trail Series swag.

Run scenic trails at Thetis Lake Park with 10 mile and 5 mile options, including a steep climb up Stewart Mountain and muddy water crossings. Enjoy community vibes, hot drinks, age category awards and fundraising for Harriers Foundation sch..

Join Pigtails Run in Maple Valley on December 13, 2025 for 50K, marathon or half along scenic Cedar River and Green River trails. Low support Fat Ass style event; finishers get a Pigtails medal and patch.

Run scenic coastal trails at Deception Pass State Park on December 13 and 14, 2025 with 50K, 25K and a kids 1K fun run. Expect technical single track, bluff views and two crossings of the iconic bridge.

Celebrate the solstice on a scenic loop through Seattle's Seward Park, choose a 4.2 mile or 10k and enjoy forest trails and playful terrain. Dress up for Glitter Glamour and the Galaxy costume prizes and score limited edition series socks.

Hit the scenic trails of Grouse Mountain with options for a 10 Mile, a 50 Mile, or a Virtual Challenge on Dec 30 and 31, 2025. Enjoy stunning views, volunteer trail cleanup, and support the Friends of Grouse Mountain while testing your limi..

Explore St. Edward State Park on January 3, 2026 with 4 mile and 8 mile loops that hug the lakeshore and weave through twisting single track. This USATF sanctioned Winter Trail Series stop offers finish aid and season perks.

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.

Celebrate winter trails at Bridle Trails Winter Running Festival, a daytime event returning for the first time in 30 years at Bridle Trails State Park. Pick 5 mile to 50k loops or relay teams and support the Bridle Trails Park Foundation.

Frost Eagle Trail Run on January 17 at Soaring Eagle Regional Park in Sammamish offers 5 mile and half marathon courses on twisty singletrack with rolling hills. Figure eight loops pass aid stations regularly for steady support.

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.

Run the Interlaken Icicle Dash in Seattle on January 31, choose 5k or 10k looped courses that weave paved boulevard and scenic dirt trails with a short climb. It is the final race of the Winter Trail Series, full of winter running charm.

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.

Take on marathon, half marathon, 10 km or 5 km trail races at Fort Ebey State Park on Whidbey Island. Rolling forested kettle terrain and bluff top views of the Strait of Juan de Fuca and the Olympic Mountains make each mile scenic.

Take on the Woolley Trail Runs along the scenic Cascade Trail in Sedro Woolley, WA with 50k, marathon, or half marathon options on railroad grade gravel. Courses are out and back with limited aid and parking, so come prepared.

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..

Challenge yourself on forested, muddy trails at Lord Hill Regional Park with race options from 5K to 50K, creek crossings, slippery bridges and a steady climb. Aid stations keep you fueled and finishers earn handmade, solar powered awards.

Run Ridge Run returns to Sasamat Lake in Port Moody on Feb 21, 2026, offering 13 km and 25 km trail options along scenic ridges and lakeside trails. Enjoy post race soup and sushi, tree planting per entry, and a fun kids race.

Run the scenic Rock Solid Marathon or Half on Whidbey Island, Saturday February 28, 2026, with coastal roads, beach miles, and island trails finishing at the historic Captain Whidbey Inn. Proceeds support The Rock Solid Foundation.

Run a scenic 25K point to point through old growth evergreens and fern lined singletrack in Larrabee State Park near Bellingham. Expect runnable trails, ocean and Mount Baker views, and a finish at the Larrabee State Park Amphitheater.