Winter ultramarathons in Washington, United States

Steep 0.35-mile loop with 89 meters elevation gain per lap, repeated up to 100 times for Everest-equivalent climbing and cumulative elevation awards

Casual, no-fee winter run on icy terrain with a low-key, unsupported atmosphere

Scenic Cedar River Trail route with 16 miles of packed gravel, 15 miles of paved bike path, gentle hill at mile 21, start and finish at Landsburg Park

Rugged technical trails through dense forests and along dramatic coastal bluffs, with challenging grades and a crossing of the Deception Pass Bridge

Winter Solstice laps on a fatass-style course, self-paced on trail terrain with on-site nutrition support

Scenic 5K looped trail at Fort Steilacoom Park with 3, 6, and 8 hour timed run options and convenient access to personal aid stations

Loop course on uneven, muddy winter trails at Bridle Trails State Park, shifting from daylight to night

Four 7.75-mile loops around Pullman on a scenic winter course through the Inland Northwest

Mountain ascent on a cold, wet, and rugged course through scenic terrain; endurance-focused route reflecting Olytrailrunners tradition

Scenic double out-and-back on Kirkland Corridor Trail with frequent runner sightings and easy aid station access

Rugged coastal trails, steep cliffs, dense forest, and Deception Pass Bridge crossings with technical footing and scenic vistas

Multi-distance looped course connecting Bainbridge Island’s top public and private trail networks, with February weather and minimal road segments

Two-loop 50K with 4,800 feet of elevation gain on forested singletrack, gravel roads, and clearcut sections; rugged, muddy winter conditions at Lake Sylvia.

Relaxed 50k out-and-back on the Cascade Trail: railroad-grade gravel through the Skagit Valley, smooth runnable terrain and a mellow course profile.

Challenging routes through Cascade foothill forests, starting with a steep ascent followed by rolling trails and a technical descent at Lord Hill Park

100.8-mile Orcas Island loop with steep singletrack, mountain lakes, ancient forests, Salish Sea views, and 26,000 feet of elevation gain