Letterman laughed and said, “Good lord, sign me up ... at the Grandmaster Ultras 100 Miler near Mesquite, Nevada. It was the 100th time she has completed a 100-mile race.

basalt rock and makeshift bridges across Crab Creek and Irby Road. Competed in 100- and 50-mile distances, the racing is grueling, with generally just more than half of racers competing the routes.