April ultramarathons in United States

Smooth, fast 2-mile loop at Majestic Farm through woods, meadows, and lakeside stretches, with a heated barn hub for long timed efforts.

95% packed dirt course with brief rock and grass sections near sunflowers, 36-hour format, multiple 5k laps, 100-mile Country Sized belt buckle

Gentle 2-mile trail loop in Bremond, TX with flexible distance options up to 12 hours, featuring distance milestones and a supportive atmosphere

Sandy trails beneath longleaf pine canopy in Weymouth Woods-Sandhills Nature Preserve, cupless format with start/finish aid station

Repeated loops on private mountain trails, with relentless climbs, long switchbacks, and a remote, rugged feel in the Leatherwood Mountains.

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

Challenging 50-mile course on Florida’s Croom Hiking Trail with three loops through longleaf pine forests, scrub oak hills, creek bottoms, and cypress ponds

Point-to-point 50K on the Northern Kettle Moraine Ice Age Trail, with glacial landscapes, classic trail terrain, and early-season spring conditions.

Four-loop course linking Horsethief Canyon, Prairie, Alum Creek, and Big Bluff with varied canyons, prairies, creeks, and bluff scenery

Dirt single-track trails through Lake Meredith National Recreation Area, featuring 25K, 50K, and 50 mile distances amid West Texas scenery

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

Trail loop course at Genessee Valley Outdoor Learning Center with day and night running, mass start, time-based endurance format, and on-course support

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

Forested, rolling trails through historic Civil War sites and extensive bluebell stands in a scenic Virginia park

Jeep trails and singletrack paths through Mt. Toby’s varied terrain, early-season race atmosphere

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

Rocks and Roots Trail at Alum Creek, with spring mud, moisture, changing conditions, and a scenic runner-designed route.

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