All available race results Letterio La Rosa
| Date | Race | Rank |
| Giro di Sicilia | ||
| 31/10 | Stage 7 | 25 |
| 01/11 | Stage 8 | 7 |
| 01/11 | General Classification | 26 |
Rider information for 1936
| Rank | 1183 |
| Score | 4 |
| Name | Letterio LA ROSA |
| Country | Italy |
| Team | Individual |
| Date | Race | Rank |
| Giro di Sicilia | ||
| 18/04 | Stage 4 | 7 |
| 21/04 | Stage 6 | 5 |
| 23/04 | Stage 8 | 2 |
| 23/04 | General Classification | 18 |
Rider information for 1939
| Rank | 550 |
| Score | 35 |
| Name | Letterio LA ROSA |
| Country | Italy |
| Team | Individual |
No results available in season 1947.
Rider information for 1947
| Rank | 1630 |
| Score | 0 |
| Name | Letterio LA ROSA |
| Country | Italy |
| Team | U.S. Barcelona |
| Date | Race | Rank |
| Giro di Sicilia | ||
| 25/11 | Stage 3 | 6 |
| 26/11 | Stage 4 | 4 |
Rider information for 1948
| Rank | 858 |
| Score | 15 |
| Name | Letterio LA ROSA |
| Country | Italy |
| Team | U.S. Barcelona |
No results available in season 1952.
Rider information for 1952
| Rank | 1907 |
| Score | 0 |
| Name | Letterio LA ROSA |
| Country | Italy |
| Team | U.S. Barcelona |