Info
| Last name | Castelijns |
| First name | Twan |
| Nationality |  Netherlands |
| Date of birth | 23-01-1989 |
| Age | 36 |
Monuments
| Date | Rank | Race | |||||
|---|---|---|---|---|---|---|---|
 Sharjah Tour (2.2) | |||||||
| 30-11 | 20 | Stage 3Khorffakan Corniche - Al Hatae (164.0km) | |||||
| 27-08 | 41 |  Druivenkoers - Overijse (1.1) | |||||
| 22-08 | 29 | Arnhem-Veenendaal Classic (1.1) | |||||
| 19-08 | 10 | GP Stad Zottegem (1.1) | |||||
| Ster ZLM Toer GP Jan van Heeswijk (2.1) | |||||||
| 106 |  Standings | ||||||
| 22-06 | 57 | Stage 5Gerwen - Boxtel (173.0km) | |||||
| 21-06 | 101 | Stage 4Verviers - Jalhay (186.0km) | |||||
| 20-06 | 92 | Stage 3Buchten - Buchten (190.0km) | |||||
| 19-06 | 115 | Stage 2Rucphen - Sint Willebrord (183.0km) | |||||
| 18-06 | 99 | Stage 1Bladel - Bladel (7.0km) | |||||
| 15-06 | 71 | Ronde van Limburg (1.1) | |||||
 Paris-Arras Tour (2.2) | |||||||
| 24-05 | 18 | Stage 2Margny-lès-Compiègne - Beaurains (167.0km) | |||||
| 04-05 | 19 |  Destination Thy (1.2) | |||||
| 03-05 | 17 | Himmerland Rundt (1.2) | |||||
| 05-04 | 25 | Volta Limburg Classic (1.1) | |||||
| 21-03 | 27 | Handzame Classic (1.1) | |||||
| 15-03 | 44 | Albert Achterhes Pet Ronde van Drenthe (1.1) | |||||
| 09-03 | 45 | Rabobank Dorpenomloop Rucphen (1.2) | |||||
| 08-03 | 33 | Ster van Zwolle (1.2) | |||||
Teams
| Year | Team |
|---|---|
| 2017 | Team LottoNL - Jumbo |
| 2016 | TEAMLottoNL - Jumbo |
| 2015 | TEAMLottoNL - Jumbo |
| 2015 | Babydump Cycling Team |
| 2014 | Koga Cycling Team |
Victories
| This year | 0 |
| Total | 0 |