All available race results Léon Parmentier
| Date | Race | Rank |
| 18/05 | Paris - Lille | 13 |
Rider information for 1924
| Rank | 754 |
| Score | 7 |
| Name | Léon PARMENTIER |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 26/04 | Paris - Lille | 10 |
| 26/07 | Paris - Menin | 14 |
Rider information for 1925
| Rank | 418 |
| Score | 39 |
| Name | Léon PARMENTIER |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 21/03 | Ronde van Vlaanderen | 5 |
| 04/04 | Paris - Roubaix | 37 |
| 02/05 | Paris - Tours | 9 |
| Tour de France | ||
| 20/06 | Stage 1 | 3 |
| 22/06 | Stage 2 | 6 |
| 24/06 | Stage 3 | 16 |
| 26/06 | Stage 4 | 35 |
| 28/06 | Stage 5 | 22 |
| 30/06 | Stage 6 | 9 |
| 02/07 | Stage 7 | 6 |
| 03/07 | Stage 8 | 6 |
| 05/07 | Stage 9 | 8 |
| 06/07 | Stage 10 | 6 |
| 08/07 | Stage 11 | 9 |
| 10/07 | Stage 12 | 32 |
| 12/07 | Stage 13 | 12 |
| 14/07 | Stage 14 | 5 |
| 16/07 | Stage 15 | 6 |
| 17/07 | Stage 16 | 4 |
| 18/07 | Stage 17 | 4 |
| General Classification | 7 | |
| 25/07 | Paris - Menin | 12 |
| Vuelta al Pais Vasco | ||
| 05/08 | Stage 2 | 14 |
| 06/08 | Stage 3 | 18 |
| 08/08 | Stage 4 | 12 |
| 08/08 | General Classification | 12 |
Rider information for 1926
| Rank | 12 |
| Score | 1344 |
| Name | Léon PARMENTIER |
| Country | Belgium |
| Team | Automoto - Hutchinson |
| Date | Race | Rank |
| 17/04 | Paris - Roubaix | 32 |
| 01/05 | Paris - Tours | 57 |
| 22/05 | Paris - Menin | 7 |
| 29/05 | Paris - Bruxelles | 4 |
| Circuit du Midi | ||
| 15/07 | Stage 2 | 5 |
| 17/07 | Stage 3 | 5 |
| 17/07 | General Classification | 13 |
| 31/07 | Omloop van Noord-België | 6 |
| 21/08 | Circuit de Mont-Blanc | 3 |
Rider information for 1927
| Rank | 84 |
| Score | 355 |
| Name | Léon PARMENTIER |
| Country | Belgium |
| Team | Automoto |
| Date | Race | Rank |
| 25/03 | Ronde van Vlaanderen | 23 |
| 08/04 | Paris - Roubaix | 38 |
| 22/04 | Paris - Tours | 40 |
Rider information for 1928
| Rank | 302 |
| Score | 78 |
| Name | Léon PARMENTIER |
| Country | Belgium |
| Team | Automoto |
No results available in season 1930.
Rider information for 1930
| Rank | 1688 |
| Score | 0 |
| Name | Léon PARMENTIER |
| Country | Belgium |
| Team | Individual |