For the endurance hikers, the out-and-back nearly 10-mile Seven Mile Hole Trail boasts a 2,000-foot elevation gain and is one of the trails that travels to the bottom of the canyon; it will likely ...

Matt Ryerson, the CEO of the United Way of Greater Knoxville, returned to town this week after successfully running the Grand Canyon twice in one day. It's the latest endurance test the 53-year ...