Silas G. Christofferson
Birthplace: Des Moines, Iowa
Born: March 15, 1890
Died: October 31, 1916
Silas Christofferson
Silas G. Christofferson
Birthplace: Des Moines, Iowa
Born: March 15, 1890
Died: October 31, 1916
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| Year | Series | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles | Points | Standing |
| 1909 | AAA | 3 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 140* | 33T* | |
| Total | 3 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0/140* |
| Track Type | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Road Course | 3 | 0 | 0 | 1 | 1 | 0 | 0 | 0 |
| Series | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| AAA | 3 | 0 | 0 | 1 | 1 | 0 | 0 | 0 |
| Start # | Date | Track | Type | Series | Car # | Sponsor/Name | Chassis | Engine | Start | Finish | Laps | Status |
Points |
| 1 | 6/12/1909 | Portland 2 | RC | AAA | 14 | Stoddard-Dayton | Stoddard-Dayton | Stoddard-Dayton | X | 3 | 3 | 0:47:34 55.249 |
30* |
| 2 | 6/12/1909 | Portland 3 | RC | AAA | 14 | Stoddard-Dayton | Stoddard-Dayton | Stoddard-Dayton | X | 2 | 7 | 1:44:31 58.670 |
110* |
| 3 | 7/10/1909 | Santa Monica 2 | RC | AAA | 1 | Cadillac | Cadillac | Cadillac | 1 | 8 | 18 | Out |