400 meter u23 Men, Heat:2 of 2 ; Official result
| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
| 1 | 3 | 1486 | ADAMS, Lorenzo | UWC | u23 | 52.36 | Q | ||
| 2 | 6 | 58 | KAROLUS, Bronique | UWC | u23 | 52.98 | Q | ||
| 3 | 2 | 57 | GERTSE, Marco | VELO | u23 | 53.87 | Q | ||
| 4 | 4 | 1426 | TIMMY, Wesley | TNLK | u23 | 54.41 | q | ||
| 5 | 5 | 503 | STEELE, Nolan | UCT | u23 | 56.17 | |||
| 6 | 7 | 507 | GRIFFITHS, Ryan | UCT | u23 | 57.55 |