All available race results Jozef van Isterdael
| Date | Race | Rank |
| 02/04 | Bruxelles - Gembloux - Bruxelles | 13 |
Rider information for 1911
| Rank | 838 |
| Score | 1 |
| Name | Jozef VAN ISTERDAEL |
| Country | Belgium |
| Team | Individual |
No results available in season 1912.
Rider information for 1912
| Rank | 557 |
| Score | 15 |
| Name | Jozef VAN ISTERDAEL |
| Country | Belgium |
| Team | Individual |
No results available in season 1913.
Rider information for 1913
| Rank | 504 |
| Score | 11 |
| Name | Jozef VAN ISTERDAEL |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 22/03 | Ronde van Vlaanderen | 16 |
Rider information for 1914
| Rank | 170 |
| Score | 83 |
| Name | Jozef VAN ISTERDAEL |
| Country | Belgium |
| Team | Individual |
No results available in season 1915.
Rider information for 1915
| Rank | 171 |
| Score | 0 |
| Name | Jozef VAN ISTERDAEL |
| Country | Belgium |
| Team | Individual |
No results available in season 1916.
Rider information for 1916
| Rank | 118 |
| Score | 0 |
| Name | Jozef VAN ISTERDAEL |
| Country | Belgium |
| Team | Individual |
No results available in season 1917.
Rider information for 1917
| Rank | 195 |
| Score | 0 |
| Name | Jozef VAN ISTERDAEL |
| Country | Belgium |
| Team | Individual |
No results available in season 1918.
Rider information for 1918
| Rank | 237 |
| Score | 0 |
| Name | Jozef VAN ISTERDAEL |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| Tour de Belgique | ||
| 27/05 | Stage 2 | 35 |
| 31/05 | Stage 4 | 21 |
| 01/06 | Stage 5 | 3 |
| 01/06 | General Classification | 23 |
Rider information for 1919
| Rank | 215 |
| Score | 38 |
| Name | Jozef VAN ISTERDAEL |
| Country | Belgium |
| Team | Individual |
No results available in season 1920.
Rider information for 1920
| Rank | 658 |
| Score | 0 |
| Name | Jozef VAN ISTERDAEL |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 10/07 | Groote Scheldeprijs | 9 |
Rider information for 1921
| Rank | 641 |
| Score | 6 |
| Name | Jozef VAN ISTERDAEL |
| Country | Belgium |
| Team | Individual |