All available race results René Ducastaing
| Date | Race | Rank |
| Tour de Belgique | ||
| 17/05 | Stage 1 | 82 |
| 18/05 | Stage 2 | 73 |
| 19/05 | Stage 3 | 70 |
| 20/05 | Stage 4 | 45 |
| 21/05 | Stage 5 | 37 |
| 21/05 | General Classification | 35 |
| 25/06 | Antwerpen - Jupille | 20 |
Rider information for 1933
| Rank | 1821 |
| Score | 0 |
| Name | René DUCASTAING |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| Tour de Belgique | ||
| 06/06 | Stage 1 | 93 |
| 07/06 | Stage 2 | 68 |
| 08/06 | Stage 3 | 54 |
| 09/06 | Stage 4 | 42 |
| 10/06 | Stage 5 | 27 |
| 10/06 | General Classification | 28 |
Rider information for 1934
| Rank | 1845 |
| Score | 0 |
| Name | René DUCASTAING |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| Tour de Belgique | ||
| 26/05 | Stage 1 | 78 |
Rider information for 1935
| Rank | 1701 |
| Score | 0 |
| Name | René DUCASTAING |
| Country | Belgium |
| Team | Individual |