| Race details | |
|---|---|
| Race 3 of 14 in the 1974 USAC Championship Car season | |
 | |
| Date | March 10, 1974 |
| Official name | 1974 California 500 |
| Location | Ontario Motor Speedway, Ontario, California, United States |
| Course | Permanent racing facility 2.500 mi / 4.023 km |
| Distance | 200 laps 500.000 mi / 804.672 km |
| Pole position | |
| Driver |  A. J. Foyt (Gene White) |
| Time | 190.617 mph (306.768 km/h) |
| Podium | |
| First | Bobby Unser (All American Racers) |
| Second | Al Unser (Vel's Parnelli Jones Racing) |
| Third | Jerry Grant (Fletcher Racing) |
The 1974 California 500, the fifth running of the event, was held at the Ontario Motor Speedway in Ontario, California, on Sunday, March 10, 1974. The event was race number 3 of 14 in the 1974 USAC Championship Car season. The race was won by Bobby Unser, his first California 500 victory.