Info
| Last name | van Katwijk |
| First name | Piet |
| Nationality |  Netherlands |
| Date of birth | 27-02-1949 |
| Place of birth | Oploo |
| Passed away | 24-02-2025 |
| Age when passed away | 75 |
Monuments
| Date | Rank | Race | |
|---|---|---|---|
| 24-09 | 24 |  Paris-Brussel (1.1) | |
| 31-08 | DNF |  UCI World Championship Sallanches (WC) | |
| 01-08 | 3 |  GP Kanton Aargau (1.1) | |
 Tour de Luxembourg (2.2) | |||
| 9 |  Standings | ||
| 08-06 | Stage 4Echternach - Diekirch (170.0km) | ||
| 06-06 | 3 | Stage 2Esch-sur-Alzette - Grevenmacher (183.0km) | |
| Quatre Jours de Dunkerque (2.1) | |||
| 08-05 | 3 | Stage 2Aire-sur-la-Lys - Saint-Quentin (176.0km) | |
| 07-05 | 5 | Stage 1Dunkerque - Dunkerque (199.0km) | |
| 13-04 | 10 | Paris-Roubaix (CDM) | |
| Ronde van België (2.3) | |||
| 15 | Standings | ||
| 10-04 | 9 | Stage 5Beringen - Liège (176.0km) | |
| 09-04 | 9 | Stage 4bWaremme - Beringen (88.0km) | |
| 02-04 | 3 | Gent-Wevelgem (1.1) | |
| 30-03 | 26 | Ronde van Vlaanderen (CDM) | |