All available race results Leon Kopp
| Date | Race | Rank |
| 18/04 | Sedan - Bruxelles | 19 |
| 16/05 | Paris - Liège | 9 |
| Date | Race | Rank |
| Tour de Belgique | ||
| 21/05 | Stage 1 | 49 |
Rider information for 1911
| Rank | 944 |
| Score | 0 |
| Name | Leon KOPP |
| Country | Belgium |
| Team | Individual |
No results available in season 1919.
Rider information for 1919
| Rank | 294 |
| Score | 23 |
| Name | Leon KOPP |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| Tour de France | ||
| 27/06 | Stage 1 | 27 |
| 29/06 | Stage 2 | 44 |
| 01/07 | Stage 3 | 53 |
Rider information for 1920
| Rank | 470 |
| Score | 11 |
| Name | Leon KOPP |
| Country | Belgium |
| Team | Individual |