All available race results Karel van Hassel
| Date | Race | Rank |
| 02/08 | Groote Scheldeprijs | 1 |
| 22/08 | World Championships Road Race (Amateurs) | 5 |
Rider information for 1925
| Rank | 245 |
| Score | 94 |
| Name | Karel VAN HASSEL |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 24/07 | Antwerpen - Menen | 3 |
| 05/09 | Sas van Gent - Brussel - Sas van Gent | 1 |
Rider information for 1927
| Rank | 474 |
| Score | 40 |
| Name | Karel VAN HASSEL |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| Tour de France | ||
| 30/06 | Stage 1 | 42 |
| 01/07 | Stage 2 | 81 |
| 02/07 | Stage 3 | 30 |
| 03/07 | Stage 4 | 9 |
| 04/07 | Stage 5 | 39 |
| 05/07 | Stage 6 | 8 |
| 06/07 | Stage 7 | 51 |
| 07/07 | Stage 8 | 91 |
| 30/07 | Groote Scheldeprijs | 8 |
Rider information for 1929
| Rank | 385 |
| Score | 52 |
| Name | Karel VAN HASSEL |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 15/06 | Omloop van Noord-België | 9 |
Rider information for 1930
| Rank | 684 |
| Score | 14 |
| Name | Karel VAN HASSEL |
| Country | Belgium |
| Team | Individual |
No results available in season 1932.
Rider information for 1932
| Rank | 1223 |
| Score | 0 |
| Name | Karel VAN HASSEL |
| Country | Belgium |
| Team | Individual |