All available race results J. Boshoff
| Date | Race | Rank |
| 25/03 | Den Haag - Brussel | 20 |
Rider information for 1928
| Rank | 1436 |
| Score | 0 |
| Name | J. BOSHOFF |
| Country | Netherlands |
| Team | Individual |
| Date | Race | Rank |
| 21/04 | Den Haag - Brussel | 12 |
Rider information for 1929
| Rank | 1069 |
| Score | 2 |
| Name | J. BOSHOFF |
| Country | Netherlands |
| Team | Individual |