50mi ultramarathons in United States

Forgiving running surface and gentle elevation changes in a small town South Dakota setting, with 50 and 100-mile ultramarathon distances.

Nighttime out-and-back courses starting and finishing at Homedale Middle School, with a mix of paved and dirt roads through scenic countryside

Mostly rail trail course connecting Belleville, WI to Orangeville, IL, passing through small towns and scenic stretches with frequent aid stations

Remote Alaskan ultramarathon with hard-packed trails, technical ridgelines, significant elevation change, wilderness views, and Chena Hot Springs finish

Remote backcountry route through Montana’s Elkhorn Mountains with dramatic climbs, steep technical descents, rugged single track, and creek crossings

Marathon and 50-mile races through the scenic southern Sangre De Cristo mountains, finishing with a Tooth of Time Ridge descent to Base Camp in Cimarron

High-altitude courses over 10,600 feet, technical trails and remote forest service roads, striking mountain views, and challenging wilderness terrain

Mountain route through the Matanuska-Susitna valley, featuring rugged Alaskan scenery and summer landscapes along Hatcher Pass

Trail race against horses over single track, gravel roads, and grassy meadows, featuring 20k, 50k, and 50-mile distances in Steel City.

Wooded trails through Ward Pound Ridge Reservation, technical singletrack and carriage roads, 50K with 4,000 ft or 50-mile with 7,000 ft elevation gain

High-altitude 100-mile route through the La Sal Mountains with approximately 21,000 feet of climbing and descending

Gentle dirt loop through tranquil woods and along the historic Murderkill River, featuring sandy paths, single-track sections, and a footbridge crossing

Rugged 52-mile route along Elkhorn Mountains ridgeline, sub-alpine forests, sweeping grasslands, over 11,000 feet of climbing, and high-altitude views

Trail-based loop format on a scenic 5K circuit, with hourly aid, central base support, and a focus on pacing, recovery, and consistency.

Single-track trails along Lake Superior with a 32-mile loop, extra out-and-back for 50-mile route, featuring technical sections and challenging climbs

Out-and-back route through the White Mountains, summiting three 4,000-foot peaks and covering up to 108 miles with 29,000 feet of elevation gain

Rugged mountain routes on Mt. Hood with demanding climbs up to 8,000 feet and alpine scenery

Out-and-back 10-mile loop on mostly flat gravel paths with gentle rolling hills and tree-lined country scenery, supporting shoes for local students

Out-and-back riverfront route along the Chattahoochee River, featuring urban whitewater, historic landmarks, and summer heat in Columbus, Georgia.

Scenic 50-mile loop through Upper Logan Canyon, starting and finishing at Beaver Mountain Ski Area, featuring segments of the Bear 100 course