400m U18 Men, Heat:3 of 4 ; Official result since 16:18
| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
| 1 | 7 | 664 | Reinious Aobakwe GEZA | JAC | YOUTH | 50.51 | |||
| 2 | 6 | 258 | Prince Thabang MONTSHIWA | TATI | YOUTH | 53.24 | |||
| 3 | 4 | 620 | Omphile Moroka | MRAC | YOUTH | 53.34 | |||
| 4 | 2 | 219 | Modise Moathudi | SPAC | YOUTH | 58.20 | |||
| 5 | 1 | 729 | Batsile Mponang | BUAC | YOUTH | 59.69 | |||
| 6 | 8 | 587 | Obonetse Bangu | FAC | YOUTH | 1:00.48 | |||
| 3 | 63 | Nako MPONWANE | BDF | YOUTH | DNS | ||||
| 5 | 517 | Prince Nasir Makwati | OAC | YOUTH | DNS |
