All available race results Jean Dewaerheydt
| Date | Race | Rank |
| 11/04 | Bruxelles - Liège | 24 |
Rider information for 1920
| Rank | 893 |
| Score | 0 |
| Name | Jean DEWAERHEYDT |
| Country | Belgium |
| Team | Individual |
No results available in season 1925.
Rider information for 1925
| Rank | 706 |
| Score | 11 |
| Name | Jean DEWAERHEYDT |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 01/05 | Liège - Bastogne - Liège | 6 |
Rider information for 1927
| Rank | 272 |
| Score | 98 |
| Name | Jean DEWAERHEYDT |
| Country | Belgium |
| Team | Individual |