All available race results Jan Valkenborgh
| Date | Race | Rank |
| 01/05 | Grote 1 Mei-Prijs Hoboken | 6 |
| 24/08 | Scheldeprijs - Schoten | 3 |
Rider information for 1941
| Rank | 360 |
| Score | 30 |
| Name | Jan VALKENBORGH |
| Country | Belgium |
| Team | Individual |
No results available in season 1950.
Rider information for 1950
| Rank | 1224 |
| Score | 4 |
| Name | Jan VALKENBORGH |
| Country | Belgium |
| Team | Individual |