400m U20 Men, Heat:3 of 7 ; Official result since 16:43
| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
| 1 | 4 | 389 | Kopano Lucas | NVAC | JUN | 52.44 | |||
| 2 | 1 | 367 | Leene MOGAPI | MTFC | JUN | 52.98 | |||
| 3 | 8 | 625 | Oteng junior BULIKWE | BA I | JUN | 53.59 | |||
| 4 | 5 | 523 | Leatile Pusoetsile | OAC | JUN | 54.41 | |||
| 5 | 7 | 567 | Obakeng letshola | FAC | JUN | 59.66 | |||
| 6 | 6 | 560 | Gogonte lesole | FAC | JUN | 1:05.84 | |||
| 2 | 373 | Itumeleng Gwakuba | Z-GU | JUN | DNS | ||||
| 3 | 374 | Bofelo Thabiwa | Z-GU | JUN | DNS |
