1966 USAC National Championship Schedule
| Race | Type | Country | Date (ET) | Winner |
|---|---|---|---|---|
| Jimmy Bryan Memorial Phoenix Raceway |
Oval |  |
March 20 |
J. McElreath Brabham-Ford |
| Trenton Trenton Speedway |
Oval | |
April 24 |
R. Ward Lola-Drake-Offy |
| Indianapolis 500 Indianapolis |
Oval | |
May 30 |
G. Hill Lola-Ford |
| Rex Mays Classic Milwaukee Mile |
Oval | |
June 5 |
M. Andretti Hawk-Ford |
| Langhorne Langhorne Speedway |
Oval | |
June 12 |
M. Andretti Hawk-Ford |
| Atlanta Atlanta Motor Speedway |
Oval | |
June 26 |
M. Andretti Hawk-Ford |
| Pikes Peak Auto Hill Climb Pikes Peak |
Hill Climb | |
July 4 |
B. Unser Unser-Chevrolet |
| Indianapolis Indianapolis Raceway Park |
Roadcourse | |
July 24 |
M. Andretti Hawk-Ford |
| Langhorne Langhorne Speedway |
Oval | |
August 7 |
R. McCluskey Eagle-Ford |
| Tony Bettenhausen Memorial Illinois State Fairgrounds Racetrack |
Dirt Track | |
August 20 |
D. Branson Watson-Offy |
| Tony Bettenhausen 200 Milwaukee Mile |
Oval | |
August 27 |
M. Andretti Hawk-Ford |
| Ted Horn Memorial DuQuoin State Fairgrounds |
Dirt Track | |
September 5 |
B. Tingelstad Meskowski-Offy |
| Indianapolis Indiana State Fairgrounds |
Dirt Track | |
September 10 |
M. Andretti Kuzma-Offy |
| Trenton Trenton Speedway |
Oval | |
September 25 |
M. Andretti Hawk-Ford |
| Sacramento California State Fairgrounds Race Track |
Dirt Track | |
October 23 |
D. Atkins Watson-Offy |
| Bobby Ball Memorial Phoenix Raceway |
Oval | |
November 20 |
M. Andretti Hawk-Ford |