All available race results Leon Sonnet
| Date | Race | Rank |
| 17/03 | Ronde van Vlaanderen | 24 |
Rider information for 1929
| Rank | 325 |
| Score | 68 |
| Name | Leon SONNET |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 22/03 | Ronde van Vlaanderen | 39 |
| 12/04 | Paris - Bruxelles | 59 |
| Tour de Belgique | ||
| 03/06 | Stage 1 | 61 |
| 04/06 | Stage 2 | 48 |
| 06/06 | Stage 3 | 48 |
| 07/06 | Stage 4 | 27 |
| 07/06 | General Classification | 27 |
Rider information for 1931
| Rank | 411 |
| Score | 40 |
| Name | Leon SONNET |
| Country | Belgium |
| Team | Individual |