All available race results Willem H. van Duyn
| Date | Race | Rank |
| 24/07 | Nederlands Kampioenschap | 4 |
Rider information for 1916
| Rank | 49 |
| Score | 21 |
| Name | Willem H. VAN DUYN |
| Country | Netherlands |
| Team | Individual |
| Date | Race | Rank |
| 24/07 | Nederlands Kampioenschap | 4 |
| Rank | 49 |
| Score | 21 |
| Name | Willem H. VAN DUYN |
| Country | Netherlands |
| Team | Individual |