All available race results Piet Haan
| Date | Race | Rank |
| 26/04 | Meisterschaft von Zürich | 5 |
| 02/05 | La Flèche Wallonne | 23 |
| Tour de Luxembourg | ||
| 31/05 | Stage 3a | 3 |
Rider information for 1953
| Rank | 203 |
| Score | 212 |
| Name | Piet HAAN |
| Country | Netherlands |
| Team | Garin - Wolber |
| Date | Race | Rank |
| 04/04 | Vier Kantone-Rundfahrt | 24 |
| Driedaagse van Antwerpen | ||
| 20/04 | Stage 1a | 50 |
| 20/04 | Stage 1b | 12 |
| 21/04 | Stage 2a | 52 |
| 22/04 | Stage 3a | 51 |
| 22/04 | Stage 3b | 42 |
| General Classification | 41 | |
| Ronde van Nederland | ||
| 26/04 | Stage 1 | 10 |
| 30/04 | Stage 5b | 3 |
| 01/05 | Stage 6 | 9 |
| 02/05 | Stage 7 | 5 |
| 02/05 | General Classification | 5 |
Rider information for 1954
| Rank | 245 |
| Score | 174 |
| Name | Piet HAAN |
| Country | Netherlands |
| Team | Locomotief - Vredestein |
| Date | Race | Rank |
| 27/03 | Vier Kantone-Rundfahrt | 4 |
| Driedaagse van Antwerpen | ||
| 19/04 | Stage 1a | 18 |
| 20/04 | Stage 2 | 17 |
| 21/04 | Stage 3a | 31 |
| 21/04 | Stage 3b | 21 |
| General Classification | 8 | |
| Ronde van Nederland | ||
| 26/04 | Stage 4a | 1 |
| 30/04 | General Classification | 1 |
| Tour de Luxembourg | ||
| 04/06 | Stage 1a | 6 |
| Tour de France | ||
| 07/07 | Stage 1a | 110 |
| 08/07 | Stage 2 | 96 |
| 09/07 | Stage 3 | 116 |
| 10/07 | Stage 4 | 119 |
| 11/07 | Stage 5 | 104 |
| 12/07 | Stage 6 | 45 |
| 13/07 | Stage 7 | 53 |
| 14/07 | Stage 8 | 100 |
Rider information for 1955
| Rank | 145 |
| Score | 410 |
| Name | Piet HAAN |
| Country | Netherlands |
| Team | Locomotief - Vredestein |
| Date | Race | Rank |
| 28/07 | Ronde van Limburg | 19 |
| Ronde van Nederland | ||
| 12/08 | Stage 7 | 5 |
| 13/08 | General Classification | 21 |
Rider information for 1956
| Rank | 400 |
| Score | 82 |
| Name | Piet HAAN |
| Country | Netherlands |
| Team | Locomotief - Vredestein |
| Date | Race | Rank |
| 23/03 | Gent - Wevelgem | 74 |
| 07/04 | Paris - Roubaix | 71 |
Rider information for 1957
| Rank | 743 |
| Score | 16 |
| Name | Piet HAAN |
| Country | Netherlands |
| Team | Eroba - Vredestein |
No results available in season 1958.
Rider information for 1958
| Rank | 1443 |
| Score | 0 |
| Name | Piet HAAN |
| Country | Netherlands |
| Team | Eroba - Vredestein |
No results available in season 1959.
Rider information for 1959
| Rank | 1212 |
| Score | 0 |
| Name | Piet HAAN |
| Country | Netherlands |
| Team | Eroba - Vredestein |