| Place | Performance | Athlete | Team |
| 1 | 0:47.93 | Q: KATOO - BRYAN | EASTERN PROVINCE ATHLETICS |
| 2 | 0:48.21 | Q: FRASER - WJ | ATHLETICS MPUMALANGA |
| 3 | 0:48.26 | Q: LABUSCHAGNE - JANES | ATHLETICS CENTRAL NORTHWEST |
| 4 | 0:48.44 | q: VISSER - ANDR | ATHLETICS CENTRAL NORTHWEST |
| 5 | 0:48.61 | -: VAN ZYL - ROUX | CENTRAL GAUTENG ATHLETICS |
| 6 | 0:48.84 | -: SWANEPOEL - NIEL | ATHLETICS GAUTENG NORTH |
| 7 | 0:49.42 | -: NGESI - AKHO | BORDER ATHLETICS |
| 8 | 0:49.95 | -: VISAGIE - RUBIN | ATHLETICS FREE STATE |