No Business 100

The No Business 100 is a 100-mile trail ultramarathon that starts and finishes at the Group Camp in Pickett CCC Memorial State Park, in Jamestown, Tennessee. The single-loop course crosses the Big South Fork National River & Recreation Area, dipping into both Tennessee and Kentucky along the way.

Runners pass through varied scenery, including sandstone arches, overlooks, and waterfalls, on a route that's notably technical and features substantial elevation gain. The direction of the loop alternates each year, and anyone who completes the race in both directions over time earns a special belt buckle recognizing that achievement.