April ultramarathons in United States (West)

Remote Moab desert trails with Navajo sandstone domes, sandy washes, technical singletrack, exposed rims, and La Sal Mountain views

Scenic lap course through Reedley farmland, orchards, vineyards, and along the Kings River, racing from sunset through moonlit night to dawn

Rocky singletrack ascent up Stairmaster Trail with 890 feet gained in under a mile, followed by slickrock descent and panoramic Moab valley views

Six laps on scenic single-track trails through dense woods, frequent stream crossings, wildlife sightings, and approximately 566 feet of elevation change per c

Trail loops featuring flat, steep, and rolling terrain with wide paths, narrow singletrack, mud, ice, natural views, and unpredictable conditions

50-mile course through scenic and historic American River landscapes, well-stocked aid stations, strong community focus, conservation partnership

Snowshoe-required race on singletrack, doubletrack, and groomed trails near the Nordic Center; sub-8 mile loops with about 500 feet of elevation gain

Double summit course over Mount Diablo with challenging elevation, supporting local park preservation efforts

Double out-and-back course across asphalt, gravel, and dirt trails with over 10,000 feet of gain through Oregon parkland and small-town landscapes

Custom route choices on varied terrain at McDowell Mountain, point-based scoring with flag and sandbag retrieval, five trails, flexible timed divisions

Transverse Range ridgeline route from Montecito to Nojoqui Falls, 59 miles of paved roads, technical single-track, and fire roads with frequent elevation shifts

105-mile point-to-point on remote singletrack through southern Arizona, with 12,500+ ft of climbing across desert, oak woodlands, and mountain terrain.

Remote Alaska winter ultra amid jagged limestone peaks, with steep climbs, glare ice, drifting snow, and constantly changing trail conditions.

Flowing singletrack, mesa climbs, red slickrock cliffs and buttes, with overlooks above the Colorado River and wide-open desert views.

Private trails at Sylvan Dale Guest Ranch with varied terrain and picturesque views, featuring individual and relay formats with on-site aid station support.

Dramatic desert trail race through canyon-like gorges, ancient lake edges and cascading waterfalls in central Washington.

Two-loop 50k course on technical ATV paths and single-track, panoramic views of Tooele Valley and Great Salt Lake, ascents near Farnsworth Peak, wooded Pole Cañ

Southern Utah desert course with mesa ascents, panoramic views, and technical terrain near Zion National Park