1973 USAC Championship Car season Schedule and results Schedule and results

| Rnd | Date_ | Race_Name | Length_ | Track | Location_ | Pole_Position | Winning_Driver |
|---|---|---|---|---|---|---|---|
| 12 | September 16 | Michigan Twin 125s #1 | mi (km) | Michigan International Speedway | Brooklyn , Michigan | Gordon Johncock | Bill Vukovich II |
| 13 | September 16 | Michigan Twin 125s #2 | mi (km) | Michigan International Speedway | Brooklyn , Michigan | Gary Bettenhausen | Johnny Rutherford |
| 14 | September 23 | Trenton 200 | mi (km) | Trenton International Speedway | Trenton , New Jersey | Gordon Johncock | Gordon Johncock |
| 15 | October 6 | Texas 200 | mi (km) | Texas World Speedway | College Station , Texas | Mario Andretti | Gary Bettenhausen |