Trail Running calendar near Downtown Seattle 2026-2027

Join the quirky Beat the Blerch run created by The Oatmeal, with distances from 5K to marathon. Enjoy a flat out and back course through mossy evergreen forests along the Snoqualmie Valley Trail near Carnation.

Run the scenic Tunnel Light Marathon or half marathon from Snoqualmie Pass to North Bend on September 13, 2026, celebrating the route's tunnel heritage and mountain views. Registration is paused as organizers work with agencies to finalize..

Run a stunning 7.7 mile mountain course with 2,544 feet of climbing at Crystal Mountain, WA, featuring summit ridgeline views and technical single track. Limited to 700 entries and part of the Cirque Series with season points and buckle awa..

Remote trail ultras near Leavenworth WA offer a 100K one loop and 100 mile two loop through the Cascades with about 21,000 feet of climb. Self supported with one resupply, the event benefits local search and rescue and veteran groups.

Run 70 miles across scenic Moran State Park on Orcas Island in this 12 leg team relay staged over two days on Sept 19 2026. Teams of two to six tackle varied trail legs from runnable to moderately technical, with meals and onsite cabins.

Ultra Fest in Easton, WA offers multi distance trail runs along the scenic Foothills Trail through rivers, forests, and Cascade mountain views. Choose distances from 25K to 100M and chase buckles or a medal in a friendly, wild setting.

A themed 5K on September 19, 2026 at Magnuson Park in Seattle that invites participants to walk or run in costume. The trail route includes mild inclines and mixed surfaces and welcomes leashed dogs and suitable strollers.

Discover coastal trails and ocean views in Anacortes at the Fidalgo Trail Run, with marathon, half marathon, 5 mile and kids races. Enjoy looping courses, iconic bridge scenery and a friendly community atmosphere from Evergreen Trail Runs.

North Bend Trail Fest, October 3 to 4, 2026 in North Bend, WA, showcases the Skyline 30k Vert Running Series Championship with 6,300 feet of climbing, the Mt Si Vertical Kilometer, and the Little Si 10k. Try the two day North Bend Double fo..

Mad Meadows is a scenic trail race near Leavenworth on October 10, 2026 offering 50K and 50M routes with big elevation gain across alpine ridgelines, meadows and river valleys. Expect technical pumice and talus sections, Glacier Peak views,..

Trail races at Grand Ridge Park in Issaquah, WA offering 5 Mile, half marathon, full marathon and 50K on two loop courses through forested Cascade foothills. Aid stations are stocked and the event is a cupless race.

A low cost, low key set of long-distance races in Maple Valley, WA on Dec 12, 2026, with 50K, marathon, and half marathon options and limited on-course support in a grassroots atmosphere.