400 meter Jongens B series, Heat:4 of 4 ; Official result
| Pl. | Laan | Nr | Naam | PR | Vereniging | Cat | Resultaat | Info |
| 1 | 6 | 59 | BOUMAN Bastiaan | 52.33 | Trias | Jun | 53.33 | Q |
| 2 | 5 | 262 | KLAVEREN Thomas van | 52.86 | AAV '36 | Jun | 54.63 | Q |
| 3 | 3 | 356 | NIEUWENHUIZEN Remon van | 56.28 | AAV '36 | Jun | 55.51 | |
| 4 | 4 | 156 | GIELTJES Nick | 54.15 | Statina | Jun | 58.07 | |
| 5 | 2 | 351 | MOSSINK Hajo | 62.00 | Suomi | Jun | 60.83 |