Winter ultramarathons in United States (West)

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

Classic Northern California terrain: flowing singletrack, rolling dirt paths, stout climbs, heat, exposure, and wide-open vistas.

Scenic desert landscapes, rolling singletrack, quick ascents and descents on a mix of classic and newer trails in McDowell Mountain Regional Park

Coastal trails through Point Mugu State Park, panoramic ocean views, rugged climbs, and rejuvenated landscapes with blooming flora

Loop through rolling Spangler Hills desert terrain on jeep roads, singletrack and sandy washes, with expansive views of the Southern Sierra.

High desert ultramarathon on the Arizona Trail with out-and-back segments, expansive views, and northern ridgeline passages near the Santa Rita Mountains

High-altitude 50k on technical trails through Staunton State Park, featuring rugged mountain terrain, granite cliffs, meadows, and frequent wintry conditions.

Point-to-point 50-mile course from Sunrise Trailhead through Cuyamaca Rancho State Park, forested trails, and Oriflamme Canyon to the desert floor finish.

1km out-and-back trail with a 540-foot ascent, poker chip turnarounds, and milestone awards for multiple ascents

Scenic 10k desert loop near St. George with alternating directions, varied distances, and supportive trail running atmosphere

Millerton Lake and San Joaquin River trails with scenic valley views, 50k route, regular aid stations, and crew access at River Gorge Management Area

3.33 km loop course on asphalt and gravel with two climbs per lap, 120 feet elevation gain, start and finish at the bottom of the soap box derby hill

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

No-frills urban ultramarathon from Twin Peaks with 50K or 50-mile routes through city landmarks, limited aid, and self-navigation challenges

6-mile loop course from Confluence Park with 1.5-hour cutoff per loop, up to 17 loops for 102 miles, progressive elimination format

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

Scenic 50K and Half Marathon with generous cutoffs, trekker-friendly course, and capped field for an intimate year-end event

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