1973 USAC Championship Races and Standings| Racing Years

Date	Circuit	Race
April 7	Texas World Speedway	1973 USAC Texas 200
April 15	Trenton Speedway	1973 USAC Trentonian Split 150 (Race 1)
April 16	Trenton Speedway	1973 USAC Trentonian Split 150 (Race 2)
May 30	Indianapolis Motor Speedway	1973 USAC Indianapolis 500
June 10	The Milwaukee Mile Speedway	1973 USAC Rex Mays 150
July 1	Pocono Raceway	1973 USAC Schaefer 500
July 15	Michigan International Speedway	1973 USAC Michigan 200
August 12	The Milwaukee Mile Speedway	1973 USAC Tony Bettenhausen 200
August 26	Ontario Motor Speedway	1973 USAC Ontario 100 (Race 1)
August 27	Ontario Motor Speedway	1973 USAC Ontario 100 (Race 2)
September 2	Ontario Motor Speedway	1973 USAC California 500
September 16	Michigan International Speedway	1973 USAC Michigan Twin 125S (Race 1)
September 17	Michigan International Speedway	1973 USAC Michigan Twin 125S (Race 2)
September 23	Trenton Speedway	1973 USAC Trenton 200
October 6	Texas World Speedway	1973 USAC College Station 200
November 3	Phoenix International Raceway	1973 USAC Arizona 150

1973 / USAC National Championship Trail