Larry Williams Drive

Running phenom Sam Ruthe set another middle distance record - and there's belief it could go deeper than good genetics. The 16-year-old broke Sir John Walker's overall national mile mark set at Oslo in 1982 at an indoor meet in Boston. Ruthe's grandfather, Trevor Wright, is also a skilled runner, but he says genetics only contribute to a small part of the teen's success. "I put it down to dedication, talent and a good coach and a good manager...definitely dedicated." LISTEN ABOVESee omnystudio.com/listener for privacy information.