All available race results Gregoire Leisen
| Date | Race | Rank |
| Tour de Luxembourg | ||
| 23/05 | General Classification | 24 |
| 01/07 | Bruxelles - Luxembourg - Mondorf | 21 |
| Tour de France | ||
| 10/07 | Stage 1 | 77 |
| 11/07 | Stage 2a | 63 |
| 11/07 | Stage 2b | 74 |
Rider information for 1939
| Rank | 1084 |
| Score | 2 |
| Name | Gregoire LEISEN |
| Country | Luxembourg |
| Team | Alcyon - Dunlop |