All available race results Tiemen Groen
| Date | Race | Rank |
| Tour de l'Avenir | ||
| 08/07 | Stage 7 | 5 |
Rider information for 1966
| Rank | 724 |
| Score | 10 |
| Name | Tiemen GROEN |
| Country | Netherlands |
| Team | Individual |
| Date | Race | Rank |
| 30/04 | Meisterschaft von Zürich | 55 |
| 24/09 | G.P. des Nations | 8 |
Rider information for 1967
| Rank | 473 |
| Score | 33 |
| Name | Tiemen GROEN |
| Country | Netherlands |
| Team | Caballero |
No results available in season 1968.
Rider information for 1968
| Rank | 793 |
| Score | 5 |
| Name | Tiemen GROEN |
| Country | Netherlands |
| Team | Caballero - Wielersport |