400m Jongens A series, Heat:1 of 4 ; Official result
| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
| 1 | 5 | 272 | KLAVEREN Thomas van | 49.92 | Ilion | JA | 52.47 | Q | |
| 2 | 6 | 486 | SPIERENBURG Arend-Jan | 50.74 | Cialfo | JA | 52.63 | Q | |
| 3 | 3 | 274 | KLEIN Roman de | 53.94 | Daventria | MA | 53.05 | q | |
| 4 | 4 | 215 | HINDRIKS Maarten | 54.36 | AAC '61 | JA | 54.13 | q | |
| 5 | 1 | 277 | KLOMP Kevin | 57.07 | Statina | JA | 58.41 |