The 1961 USAC Road Racing Championship season was the fourth season of the USAC Road Racing Championship. It began June 25, 1961, and ended October 22, 1961, after four races. Ken Miles won the season championship.
| Rnd | Race | Length | Circuit | Location | Date |
|---|---|---|---|---|---|
| 1 | Hoosier Grand Prix | 200 mi (320 km) | Indianapolis Raceway Park | Clermont, Indiana | June 25 |
| 2 | Continental Divide 200 | 200 mi (320 km) | Continental Divide Raceway | Castle Rock, Colorado | July 2 |
| 3 | Grand Prix for Sports Cars | 200 mi (320 km) | Riverside International Raceway | Riverside, California | October 15 |
| 4 | San Francisco Examiner Pacific Grand Prix | 200 mi (320 km) | Laguna Seca Raceway | Monterey, California | October 22 |
| Rnd | Circuit | Winning team | Results |
|---|---|---|---|
| Winning driver(s) | |||
| 1 | IRP | #6 Harry Woodnorth | Results |
 Augie Pabst | |||
| 2 | Castle Rock | #9 Crandall Industries | Results |
 Ken Miles | |||
| 3 | Riverside | #4 Brabham Racing Org., Ltd. | Results |
 Jack Brabham | |||
| 4 | Laguna Seca | #7 UDT-Laystall Racing Team | Results |
| Stirling Moss |