The 1980 USAC Championship Car season consisted of five races, beginning in Ontario, California on April 13 and concluding in Lexington, Ohio on July 13. The USAC National Champion and Indianapolis 500 winner was Johnny Rutherford. CART and USAC united in 1980 under the banner of the Championship Racing League (CRL). The first five races of the season were run under CRL banner and sanction by USAC. The union dissolved after the Mid-Ohio race and USAC ended their season.