Info
| Last name | Lahaye |
| First name | Jef |
| Nationality |  Netherlands |
| Date of birth | 02-12-1932 |
| Place of birth | Bunde |
| Passed away | 12-04-1990 |
| Age when passed away | 57 |
Monuments
| Date | Rank | Race | |||||
|---|---|---|---|---|---|---|---|
 Tour de Suisse (2.1) | |||||||
| 8 |  Standings | ||||||
| 3 |  Mountain | ||||||
| 22-06 | Stage 7Montreux - Zürich (239.0km) | ||||||
| 21-06 | 5 | Stage 6Thun - Montreux (207.0km) | |||||
| 18-06 | 4 | Stage 3Davos - Lugano (192.0km) | |||||
| Ronde van Nederland (2.PRO) | |||||||
| 13-05 | 3 | Stage 4Nijmegen - Sittard-Geleen (200.0km) | |||||
| 08-05 | 13 |  Liège-Bastogne-Liège (CDM) | |||||
Teams
| Year | Team |
|---|---|
| 1961 | Netherlands |
| 1961 | Nederland |
| 1961 | Groene Leeuw - SAS - Sinalco |
| 1960 | Eroba - Vredestein |
| 1959 | Eroba - Vredestein |
| 1958 | Netherlands/Luxembourg |
| 1958 | Eroba - Vredestein |
| 1957 | Eroba - Vredestein |
| 1956 | Eroba |
| 1956 | Netherlands |
Victories
| This year | 0 |
| Total | 1 |