All available race results Jan Deman
| Date | Race | Rank |
| 30/06 | Gent - Wevelgem | 15 |
Rider information for 1935
| Rank | 435 |
| Score | 58 |
| Name | Jan DEMAN |
| Country | Belgium |
| Team | Individual |
No results available in season 1937.
Rider information for 1937
| Rank | 577 |
| Score | 23 |
| Name | Jan DEMAN |
| Country | Belgium |
| Team | La Française - Dunlop |
| Date | Race | Rank |
| 13/03 | Ronde van Limburg | 28 |
Rider information for 1938
| Rank | 1224 |
| Score | 0 |
| Name | Jan DEMAN |
| Country | Belgium |
| Team | La Française |
No results available in season 1939.
Rider information for 1939
| Rank | 1205 |
| Score | 0 |
| Name | Jan DEMAN |
| Country | Belgium |
| Team | Alcyon - Dunlop |
| Date | Race | Rank |
| 05/05 | Circuit de Belgique | 26 |
Rider information for 1940
| Rank | 475 |
| Score | 6 |
| Name | Jan DEMAN |
| Country | Belgium |
| Team | Individual |