USA Track & Field
USA Track & Field (USATF) is the United States national governing body for the sports of track and field, cross country running, road running and racewalking.
It is a major promoter of running and racing events and standards at all levels and distances of running.
A USATF Certified Course is a road race course whose distance has been certified for accuracy. Courses must be certified for any road running performance to be accepted as a record or to be nationally ranked.