| Place | Performance | Athlete | Team |
| 1 | 0:48.52 | Q: MARTIN - WIAAN | WESTERN CAPE MAINSTREAM |
| 2 | 0:48.61 | Q: OLIPHANT - DAYLAN | NORTH WEST MAINSTREAM |
| 3 | 0:49.16 | Q: VERMAAK - HERMAN THEODORE | GAUTENG MAINSTREAM |
| 4 | 0:49.37 | q: DE VILLIERS - JAYDIN-LEE | WESTERN CAPE MAINSTREAM |
| 5 | 0:50.64 | -: SIKHANDE - NDUMISO | MPUMALANGA MAINSTREAM |
| 6 | 0:50.68 | -: NCUBE - JAMES | GAUTENG MAINSTREAM |
| 7 | 0:51.59 | -: LITABE - NEO | FREE STATE MAINSTREAM |