All available race results Guillaume Dubois
| Date | Race | Rank |
| 16/05 | Liège - Bastogne - Liège | 24 |
| Tour de Belgique amateur | ||
| 11/08 | Stage 4 | 4 |
| 13/08 | Stage 6 | 7 |
| 15/08 | General Classification | 15 |
Rider information for 1909
| Rank | 263 |
| Score | 58 |
| Name | Guillaume DUBOIS |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 22/08 | Bruxelles - Oupeye | 7 |
Rider information for 1910
| Rank | 401 |
| Score | 18 |
| Name | Guillaume DUBOIS |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 15/08 | Bruxelles - Esneux | 15 |
Rider information for 1911
| Rank | 1182 |
| Score | 0 |
| Name | Guillaume DUBOIS |
| Country | Belgium |
| Team | Individual |