Beverly Hills Main
Los Angeles Motor Speedway
1.25 Mile Board Oval
40 Laps/50 Miles
April 10, 1921
| Finish | Start | Driver | Car # | Sponsor/Name | Chassis | Engine | Laps | Status |
Points |
| 1 | X | Jimmy Murphy | 12 | Duesenberg | Duesenberg | Duesenberg | 40 | 0:27:27.4 109.26 | 130 |
| 2 | X | Roscoe Sarles | 10 | Duesenberg | Duesenberg | Duesenberg | 40 | 0:27:43.8 108.19 | 60 |
| 3 | X | Eddie Pullen | 9 | Duesenberg | Duesenberg | Duesenberg | 40 | 0:27:53.6 107.55 | 25 |
| 4 | X | Eddie Hearne | 1 | Revere/Duesenberg | Duesenberg | Duesenberg | 40 | Finished | 15 |
| 5 | X | Joe Thomas | 11 | Duesenberg | Duesenberg | Duesenberg | 40 | Finished | |
| 6 | X | Ralph DePalma | 4 | Ballot | Ballot | Ballot | 37 | Broken valve |
| Lap Leaders | Total | Laps |
| Jimmy Murphy | 30 | 11-40 |
| Ralph DePalma | 10 | 1-10 |