All available race results Karel Pen
| Date | Race | Rank |
| 06/11 | Nederlands Kampioenschap | 5 |
Rider information for 1904
| Rank | 187 |
| Score | 18 |
| Name | Karel PEN |
| Country | Netherlands |
| Team | Individual |
| Date | Race | Rank |
| 26/07 | Amsterdam - Utrecht - Amsterdam | 5 |
| 26/07 | Nederlands Kampioenschap | 5 |
Rider information for 1908
| Rank | 246 |
| Score | 38 |
| Name | Karel PEN |
| Country | Netherlands |
| Team | Individual |