All available race results Gaston Leonard
| Date | Race | Rank |
| 17/09 | Paris - Menin | 7 |
| 24/09 | Circuit de Touraine | 6 |
Rider information for 1911
| Rank | 272 |
| Score | 60 |
| Name | Gaston LEONARD |
| Country | France |
| Team | Individual |
| Date | Race | Rank |
| 07/04 | Paris - Roubaix | 13 |
| 15/08 | Paris - Honfleur (professionnels) | 4 |
Rider information for 1912
| Rank | 158 |
| Score | 120 |
| Name | Gaston LEONARD |
| Country | France |
| Team | Individual |
| Date | Race | Rank |
| 06/04 | Paris - Tours | 10 |
Rider information for 1913
| Rank | 235 |
| Score | 65 |
| Name | Gaston LEONARD |
| Country | France |
| Team | Individual |