In 2005 Dean Karnazes ran 350 miles in eighty hours—setting the world record for distance running without sleep. Ten years later, Rob Young, nicknamed the “Marathon Man,” broke the record by covering nearly 374 miles in eighty-eight hours. Young, who had endured abuse by his father as a child, said he ran with two goals in mind: to test the limits of human endurance and to help the world become a better place for kids.