Trail Running calendar near Renton 2026-2027

A self supported mountain trail event in the Cascades offering 100K and 100 mile options, about 21,000 feet of elevation change and one resupply point after the first 100K. The race is nonprofit and benefits local rescue and veteran groups.

Ultra Fest in Easton, WA on September 19, 2026 offers races from 25K to 100M on the Foothills Trail with on-site parking and day-of packet pick-up. Buckles are awarded for 100M, 100K and 50M while 50K finishers receive a medal.

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.

Trail races in Deception Pass State Park featuring 5-mile, half and full marathon options, coastal views, multiple loops, aid stations, cupless racing, and a pedestrian crossing over the Deception Pass Bridge.

A two-day mountain running festival in North Bend, Washington on October 3 and 4, 2026 featuring the North Bend Skyline 30k, Mt Si Vertical Kilometer, Little Si 10k and a Double event. The Skyline is the Vert Running Series championship and..

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,..

A trail race at Grand Ridge Park in Issaquah offering 5 mile, half marathon, full marathon and 50K on two-loop courses through mossy Cascade foothills.

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.