All available race results Eef van Grafhorst
No results available in season 1917.
Rider information for 1917
| Rank | 98 |
| Score | 21 |
| Name | Eef VAN GRAFHORST |
| Country | Netherlands |
| Team | Individual |
| Date | Race | Rank |
| 14/07 | Nederlands Kampioenschap | 3 |
Rider information for 1918
| Rank | 120 |
| Score | 21 |
| Name | Eef VAN GRAFHORST |
| Country | Netherlands |
| Team | Individual |
| Date | Race | Rank |
| 06/06 | Nederlands Kampioenschap | 8 |
Rider information for 1920
| Rank | 511 |
| Score | 7 |
| Name | Eef VAN GRAFHORST |
| Country | Netherlands |
| Team | Individual |
| Date | Race | Rank |
| 21/06 | Nederlands Kampioenschap | 5 |
Rider information for 1921
| Rank | 342 |
| Score | 32 |
| Name | Eef VAN GRAFHORST |
| Country | Netherlands |
| Team | Individual |