April ultramarathons in California, United States

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

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

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

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

Route featuring Pritchett Peak climb, rolling descents to Lake Sonoma, out-and-back on the original course, and scenic finish at Coyote Sonoma

Out-and-back 50K from Sunrise Trailhead: PCT singletrack, 2,000+ ft drop through Oriflamme Canyon, Box Canyon desert and a long climb back.

Constant elevation changes over stony dirt paths, rocky sections, and single-track trails with minimal pavement and views of the lake

Rugged ascent from Calistoga's Palisades Trail to Mount St. Helena, technical trails, Robert Louis Stevenson State Park, panoramic views, signature Maze feature

Looped course at Cesar Chavez Academy in south Corona foothills, with options for 1/4 or 1-mile loops and scenic day and night views

Challenging trails and remote routes across Sierra Azul Open Space Preserve, featuring scenic vistas in the shadow of Mt. Umunhum

Trail route through Mendocino Coast redwoods, river crossings, waterfalls, and bluff-top finish overlooking the Pacific Ocean

50-mile trail ultra in Angeles National Forest near Lake Hughes, crossing the Leona Divide twice and spending time on the Pacific Crest Trail.

81-mile team ultramarathon from Salton City to Palomar Mountain, crossing desert and trails with 9,000 feet of climbing through Anza-Borrego State Park

Remote singletrack above Folsom Lake, with steady climbing, quiet backcountry terrain, and expansive lakeside views

Ridge-line trails and open space across Skyline Ridge, Long Ridge, and Russian Ridge with Pacific Ocean and Santa Cruz Mountains views

Pine-covered single-track trails through Huddart Park and Purisima Creek Redwoods, steep climbs, ridgeline views, and varied ecosystems

Rugged Sierra Nevada foothills, historic gold-rush routes, steep canyons, and challenging scenic terrain through the birthplace of mountain ultras