Hard ultramarathons in Tennessee, United States

Mountain trail ultramarathon in Cherokee National Forest with technical terrain, scenic views, and up to 19,000 feet of elevation gain

103-mile loop with nearly 15,000 feet of elevation on rugged trails and smooth roads, mountain vistas, winding rivers, and autumn foliage

Low elevation 14.35-mile single-track loop course along Wolf River, 7 laps for 100 miles, 34-hour limit, popular Western States qualifier

Unmarked off-trail loops in Frozen Head State Park with 60,000 feet of climbing, dense briar thickets, secretive entry, and navigation by map and compass.

33-mile loop at Shelby Farms with paved paths and flowing single-track, circling lakes and wooded sections; 100-, 200-, and 300-mile options.

Challenging loop on West Rim and West Side trails, scenic rim views overlooking coves, sunrise on the East side, highlights Franklin State Forest

200 miles on a 2-mile woodland loop with 55,000 feet of elevation gain, black slate springs, ridge line views, and self-supported aid stations