All available race results H.W.C. Klopper
| Date | Race | Rank |
| Olympia's Tour | ||
| 20/08 | General Classification | 14 |
Rider information for 1927
| Rank | 972 |
| Score | 6 |
| Name | H.W.C. KLOPPER |
| Country | Netherlands |
| Team | Individual |
| Date | Race | Rank |
| Olympia's Tour | ||
| 20/08 | General Classification | 14 |
| Rank | 972 |
| Score | 6 |
| Name | H.W.C. KLOPPER |
| Country | Netherlands |
| Team | Individual |