The world's hardest ultramarathon
The Barkley Marathons consists of five loops, 20 miles each, along unmarked trails in rural Tennessee, with about 67,000 feet of elevation. Runners must trace the course from a top…
The Barkley Marathons consists of five loops, 20 miles each, along unmarked trails in rural Tennessee, with about 67,000 feet of elevation. Runners must trace the course from a top…