Scott Traer qualified for his first U.S. national team more than a decade ago in 2012. While the 24-hour race format may seem eccentric, well-known names like Courtney Dauwalter, Kilian Jornet, and Camille Heron have dabbled in the ultra-track scene. International governing bodies regulate the discipline with USA Track & Field (USATF), the national governing body for track and field, cross country, road running, race walking, and mountain-ultra-trail (MUT) disciplines, overseeing the American contingent.