Ralph Hepburn
Ralph Rodolphius Hepburn
Birthplace: Somerville, Massachusetts
Born: April 11, 1896
Died: May 16, 1948
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| Track | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Altoona | 5 | 2 | 0 | 0 | 0 | 0 | 0 | 9 | 0 |
| Atlantic City | 3 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | |
| Beverly Hills | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 0 |
| Charlotte-BO | 5 | 1 | 0 | 0 | 0 | 0 | 0 | 6 | 0 |
| Culver City | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 0 |
| Detroit-DO | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | |
| Fulford | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 16 | 1 |
| Indianapolis | 15 | 2 | 0 | 1 | 1 | 1 | 1 | 0 | |
| Laurel | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | |
| Mines Field | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | |
| Roby | Non | points | race | only | |||||
| Rockingham | 7 | 3 | 0 | 2 | 1 | 1 | 0 | 0 | |
| Syracuse | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 13 | 0 |
| Chassis | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Cooper | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 38 | 0 |
| Detroit | Relief | drove | only | ||||||
| Duesenberg | 0 | 2 | 0 | 0 | 0 | 0 | 0 | NS | 0 |
| Fengler | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 0 |
| Kurtis | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 14 | 0 |
| Miller | 32 | 5 | 0 | 2 | 3 | 4 | 2 | 1 | |
| Rigling | Relief | drove | only | ||||||
| Stevens | 2 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | |
| Unknown | 0 | 1 | 0 | 0 | 0 | 0 | 0 | NS | 0 |
| Engine | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Cooper | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 38 | 0 |
| Duesenberg | 0 | 2 | 0 | 0 | 0 | 0 | 0 | NS | 0 |
| Locomobile | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 0 |
| Miller | 29 | 5 | 0 | 2 | 3 | 3 | 2 | 1 | |
| Novi | 2 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | |
| Offy | 4 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | |
| Studebaker | Relief | drove | only | ||||||
| Unknown | 0 | 1 | 0 | 0 | 0 | 0 | 0 | NS | 0 |