| Year | Winner | Grand Prix | Race Start |
|---|---|---|---|
| 1921 |
Disteel
? 1921 Eddie Hearne |
Cotati 150 | 14th August 1921 |
| 1921 |
Duesenberg Bros
? 1921 Roscoe Sarles |
Cotati 150 | 23rd October 1921 |
| 1922 |
Jimmy Murphy ? 1922 Jimmy Murphy |
Santa Rosa 100 | 7th May 1922 |
| 1922 |
Fiat
? 1922 Pietro Bordino |
Santa Rosa 100 | 7th May 1922 |
| 1922 |
![]() Ira Vail S8 Frank Elliott |
Santa Rosa 100 | 6th August 1922 |
| 1922 |
![]() Ira Vail S8 Frank Elliott |
Santa Rosa 50 | 6th August 1922 |
| Name | Wins | Poles | Points |
|---|---|---|---|
| Frank Elliott | 2 | 2 | 435 |
| Roscoe Sarles | 1 | 1 | 510 |
| Eddie Hearne | 1 | 1 | 435 |
| Jimmy Murphy | 1 | 1 | 320 |
| Pietro Bordino | 1 | 1 | 100 |
| Name | Wins | Poles | Points |
|---|---|---|---|
| Ira Vail | 2 | 2 | 415 |
| Duesenberg Bros | 1 | 1 | 924 |
| Disteel | 1 | 1 | 435 |
| Jimmy Murphy | 1 | 1 | 290 |
| Fiat | 1 | 1 | 100 |
Duesenberg
Miller
Miller
Fiat
Frontenac
Ballot
Duesenberg
Frontenac