No Business 100

No Business 100 sends runners on a single-loop trail ultra from Pickett CCC Memorial State Park in Jamestown, Tennessee, deep into the Big South Fork National River and Recreation Area. The race is usually described as a 100-miler, but the loop measures about 102 miles, with roughly 14,500 feet of climbing and the same amount of descent. It is 90% trail, crosses from Tennessee into Kentucky and back, and gives runners 34 hours to finish. The course changes direction each year, so returning runners do not get quite the same race twice. Along the way they pass sandstone arches, rock walls, caves, hanging bridges, stone steps, and wooden staircases, with 15 aid stations breaking up the long route. Ultranaut Running, a small grass-roots group from Knoxville, started the race in 2017, and the name comes from local lore about people who either had no business settling in such hard country or told outsiders they had no business being there.