The 1958 USAC Road Racing Championship season was the inaugural season of the USAC Road Racing Championship. The series was contested for sports cars at three rounds (Lime Rock, Marlboro, and Riverside), and Formula Libre at one round (Watkins Glen). It began September 7, 1958, and ended October 12, 1958, after four races. Dan Gurney won the season championship.

Calendar Rnd Race Length Circuit Location Date 1 Lime Rock International Open Lime Rock Park Lakeville, Connecticut September 7 2 Marlboro Grand Prix Marlboro Motor Raceway Upper Marlboro, Maryland September 21 3 International Formula Libre Grand Prix Watkins Glen International Watkins Glen, New York September 28 4 United States Grand Prix for Sports Cars Riverside International Raceway Riverside, California October 12

Season results Rnd Circuit Winning team Results Winning driver 1 Lime Rock #49 Elisha Walker Results George Constantine 2 Marlboro #49 Elisha Walker Results George Constantine 3 Watkins Glen #11 Jo Bonnier Results Jo Bonnier 4 Riverside #5 Reventhrow Automobile Incorporated Results Chuck Daigh

External links World Sports Racing Prototypes: 1958 USAC Road Racing Championship Racing Sports Cars: USAC Road Racing Championship archive