Trail Running calendar near Sumner 2026-2027

We have found 61 Trailruns within 80 miles of Sumner. See below where and when you can find the races.

Cascade Crest is a rugged 100 mile trail race in Easton WA featuring 23,000 plus feet of climbing, 32 miles on the Pacific Crest Trail and a run through the 2.3 mile Snoqualmie Tunnel. Expect technical, forested singletrack and epic views.

Tackle mountain trails at Crystal Mountain Resort July 17 to 18, 2026 with multi distance races from a sharp 5K climb to a scenic half marathon descent. Entry includes a race shirt, finisher medal and an all day gondola pass for stunning vi..

August 2026

Run fern lined single track trails through Cougar Mountain Regional Wildland Park, choosing from a speedy 5K up to a rugged 26.2 mile course. Support King County Parks and enjoy a community focused summer series with limited entries, so reg..

Scenic, mostly downhill run from Snoqualmie Pass to North Bend, featuring the Snoqualmie Tunnel and big net drops ideal for PRs. Registration is paused while organizers assess trail damage and consider alternate routes.

Bigfoot 200 is a point to point ultramarathon through Mount St. Helens country, spanning roughly 200 miles of lava fields, ridgelines, old growth forest and river crossings. Expect rugged volcanic scenery and nonstop endurance.

Experience Olympic Mountains Trail Races near Quilcene, Washington on August 15 and 16, 2026, with distances from 10K to 100K and new ruck divisions for 50K and 25K. Tackle rugged single track, big climbs and riverside views.

An evening 5k, 10k and half marathon on the paved Chambers Bay Loop Trail in University Place, WA, featuring multi-loop courses, aid stations, race-day packet pick-up, and a strict no-litter policy.

Run rugged singletrack around Mount St. Helens on August 29, 2026, choosing 50K, 20 Miler, or Half Marathon from the Science and Learning Center at Coldwater Lake. Camping, aid stations, chip timing, and epic volcanic views await.

September 2026

Experience rugged singletrack and subalpine ridgelines at the Dark Divide Trail Races near Randle, Washington, Sept 4 to 6, 2026. Distances from a 15 Miler to a 100 Miler challenge runners with steep, technical trails and remote scenery.

Run the Cascade Express Marathon or Half Marathon in Snoqualmie Pass with USATF certified courses and a Boston qualifier marathon. Revel in gradual downhill gravel trails, a Snoqualmie Tunnel section, and a custom medal.

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.

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.

October 2026

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,..

November 2026

Grand Ridge Trail Runs in Issaquah offer distances from 5 Mile to 50K and a kids race, all on rocky, technical singletrack with big climbs and rewarding views. Finish the series with a true trail challenge and well stocked aid stations.

December 2026

The Pigtails Run Flat Fat Ass returns to Maple Valley this December with 50K, marathon and half marathon options on a community supported course. Expect a laid back, low support atmosphere perfect for self reliant runners and exploring scen..