All available race results Jacob Langen
| Date | Race | Rank |
| Tour de l'Avenir | ||
| 18/09 | Stage 6 | 8 |
| 19/09 | Stage 7 | 13 |
| 24/09 | Stage 12a | 5 |
| 24/09 | General Classification | 22 |
Rider information for 1972
| Rank | 629 |
| Score | 12 |
| Name | Jacob LANGEN |
| Country | Netherlands |
| Team | Individual |
| Date | Race | Rank |
| Tour de l'Avenir | ||
| 14/07 | Stage 5 | 5 |
| 20/07 | Stage 10 | 2 |
| 21/07 | General Classification | 22 |
Rider information for 1974
| Rank | 521 |
| Score | 19 |
| Name | Jacob LANGEN |
| Country | Netherlands |
| Team | Individual |