400m U18 Men, Heat:1 of 4 ; Official result since 16:18
| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
| 1 | 1 | 657 | Letlhobo KOOSALETSE | JAC | YOUTH | 54.15 | |||
| 2 | 4 | 15 | Arabang Kutlo Montshi | MAHI | YOUTH | 54.51 | |||
| 3 | 6 | 100 | Ferguson Moriri | MMAD | YOUTH | 57.89 | |||
| 4 | 7 | 511 | Gift Matsapa | OAC | YOUTH | 1:00.18 | |||
| 2 | 721 | Lebitso KEABILE | JTEC | SEN | DNS | ||||
| 3 | 622 | Andile Phagane | MRAC | YOUTH | DNS | ||||
| 5 | 250 | Brian Oeme | FIFA | YOUTH | DNS | ||||
| 8 | 726 | Kevin SIMON | BUAC | YOUTH | DNS |
