Beverly Hills Heat 4
Los Angeles Motor Speedway
1.25 Mile Board Oval
20 Laps/25 Miles
April 10, 1921
| Finish | Start | Driver | Car # | Sponsor/Name | Chassis | Engine | Laps | Status |
Points |
| 1 | X | Jimmy Murphy | 12 | Duesenberg | Duesenberg | Duesenberg | 20 | 0:13:59.20 107.244 | 20 |
| 2 | X | Roscoe Sarles | 10 | Duesenberg | Duesenberg | Duesenberg | 20 | 0:13:59.24 107.239 | |
| 3 | X | Eddie Hearne | 1 | Duesenberg | Duesenberg | Duesenberg | 20 | 0:13:59.28 107.234 | |
| 4 | X | Tommy Milton | 2 | Durant | Duesenberg | Duesenberg | 20 | Finished | |
| 5 | X | Alton Soules | 3 | Frontenac | Frontenac | Frontenac | 20 | Finished |
| Lap Leaders | Total | Laps |
| Jimmy Murphy | 14 | 1-6, 13-20 |
| Roscoe Sarles | 4 | 9-12 |
| Tommy Milton | 2 | 7-8 |