12hr ultramarathons in Tennessee, United States

Looped nighttime miles on runnable single-track dirt trails through cedar and hardwood forests along the Duck River, glowing with reflective markers

Flat, open field trail designed for speed, minimal obstacles, challenging heat, personal fueling spots, and a communal post-race food spread

Rugged Tennessee hills, relentless dirt loops, 90+ degree heat, Barkley-inspired quirks, and aid station party zones supporting animal rescue

Loop trails at Fort Loudoun State Historic Park, with smooth runnable footing and scenic views of Tellico Lake and rolling hills.

Scenic 3-mile loop through fields and woods beside Cherokee Lake, featuring wide and single-track trails, wooden bridges, and cross country-style terrain

Smooth, flat blacktop loop with no sharp turns; a certified, efficient layout for fast 100k and 24-hour racing.

Looped former equestrian trails with notable elevation changes, available in 3, 6, or 12 hour formats

1.1-mile loop with 340 feet of climbing per lap, steep ascents, runnable sections, and a field descent on double track logging road

Rugged forested loops on Whitwell Mountain with 1000 feet of elevation gain per circuit, diverse terrain, bluffs, waterfalls, and scenic vistas

Rugged 5-mile trail loop at Hardin Farm, with about 1,000 feet of climbing per lap on repeatedly hilly terrain.

Fast, flat, USATF-certified downtown loop with 12- and 24-hour options, festive atmosphere, food trucks, music, and special buckle for 100 miles

Flat, certified 2-mile loop at Camp Jordan, with 12- and 24-hour timed formats, fast laps, easy crew access, and a festival-like race village.

4.1-mile loop with rolling hills, 328 feet of elevation gain, forested scenery, and winding, root- and rock-dotted trails

Timed looped ultramarathon on woodland trails, 6 to 24 hour race options, frequent aid at McArthur Pavilion, night running and relay teams available.