MileSplit's Billy Cvecko caught up with four flat miler DJ Principe as he took us on a maintenance run with the rest of his La Salle Academy team.
DJ Principe has run the third-fastest indoor mile ever by a high school, 4:00.97, only behind Drew Hunter and Allen Webb. This weekend Principe will be attempting to break four minutes in the mile at the Millrose Games in New York City.
Check out more on the Millrose Games ->HERE