Info
| Last name | Haan |
| First name | Piet |
| Nationality |  Netherlands |
| Date of birth | 19-11-1930 |
| Place of birth | Mechelen |
| Passed away | 22-07-2017 |
| Age when passed away | 86 |
Monuments
| Year | Milano - San Remo | Tour of Flanders | Paris - Roubaix | Liège-Bastogne-Liège | Il Lombardia |
|---|---|---|---|---|---|
| 1957 | - | - | 71st | - | - |
Grand tours
| Year | Giro d'Italia | Tour de France | Vuelta a España |
|---|---|---|---|
| 1955 | - | DNF | - |
| Date | Rank | Race | |||||
|---|---|---|---|---|---|---|---|
| 28-08 | DNF |  UCI World Championship Frascati (CM) | |||||
 Tour de France (GT) | |||||||
| 15-07 | DNF | Stage 9Briançon - Monaco (275.0km) | |||||
| 14-07 | 100 | Stage 8Thonon-les-Bains - Briançon (253.0km) | |||||
| 13-07 | 53 | Stage 7Zurich - Thonon-les-Bains (267.0km) | |||||
| 12-07 | 45 | Stage 6Colmar - Zurich (195.0km) | |||||
| 11-07 | 104 | Stage 5Metz - Colmar (229.0km) | |||||
| 10-07 | 119 | Stage 4Namur - Metz (225.0km) | |||||
| 09-07 | 116 | Stage 3Roubaix - Namur (210.0km) | |||||
| 08-07 | 96 | Stage 2Dieppe - Roubaix (204.0km) | |||||
| 07-07 | 110 | Stage 1aLe Havre - Dieppe (102.0km) | |||||
 Tour de Luxembourg (2.1) | |||||||
| 04-06 | 6 | Stage 1aDifferdange - Differdange (62.0km) | |||||
| Ronde van Nederland (2.PRO) | |||||||
| 1 |  Standings | ||||||
| 30-04 | Stage 8Roosendaal - Amsterdam (262.0km) | ||||||
| 29-04 | Stage 7Oostburg - Roosendaal (80.0km) | ||||||
| 28-04 | Stage 6Brasschaat - Oostburg (176.0km) | ||||||
| 27-04 | Stage 5Heerlen - Brasschaat (250.0km) | ||||||
| 26-04 | Stage 4bValkenswaard - Heerlen (125.0km) | ||||||
| 26-04 | 1 | Stage 4aNunspeet - Valkenswaard (182.0km) | |||||
Teams
| Year | Team |
|---|---|
| 1959 | Eroba - Vredestein |
| 1958 | Eroba - Vredestein |
| 1957 | Eroba - Vredestein |
| 1956 | Locomotief - Vredestein |
| 1955 | Locomotief - Vredestein |
| 1955 | Netherlands |
Victories
| This year | 0 |
| Total | 2 |