021 FinalResults Boys 15 300m Hurdles
| Place | Performance | Athlete | Team |
| 1 | 40.75 | MYBURG - STIAAN | HELPMEKAAR KOLLEGE |
| 2 | 42.11 | MABHUDE - CAIROL | RANDBURG |
| 3 | 42.14 | HUMAN - HERNU | KLERKSDORP HS |
| 4 | 42.65 | SCHEEPERS - ESTIAAN | MIDSTREAM COLLEGE |
| 5 | 42.96 | SCHALKWYK - ELZINO | KLERKSDORP HS |
| 6 | 43.14 | COETZEE - TRISTAN | DIE ANKER HS |
| 7 | 43.40 | PRESTON - RICO | HELPMEKAAR KOLLEGE |
| 8 | 43.97 | PRETORIUS - RUBEN | CENTURION HS |
| 9 | 44.07 | KUNENE - DAVID | CURRO HAZELDEAN |
| 10 | 44.22 | RAPHELA - BK | CURRO HAZELDEAN |
| 11 | 44.39 | DE KOCK - NEIL | GARSFONTEIN HS |
| 12 | 44.97 | MOSOMA - JUSTIN | HTS WITBANK |
| 13 | 45.13 | MMUSE - TIRILETSO | KLERKSDORP HS |
| 14 | 45.59 | LE ROUX - MALAN | CENTURION HS |
| 15 | 45.99 | MATHEBULA - NTSAKO | CORNWALL HILL |
| 16 | 46.63 | LE ROUX - DYLLON | DIE ANKER HS |
| 17 | 47.17 | VAN ROOYEN - MARTIN | MIDSTREAM COLLEGE |
| 18 | 47.90 | THOMAS - SKYLER | HTS WITBANK |
| 19 | 48.11 | TSHABALALA - NATHI | SUTHERLAND |
| 20 | 48.52 | VISSER - CJIAAN | DIE ANKER HS |
| 20 | 48.52 | STRYDOM - FOUCH | MIDSTREAM COLLEGE |
| 22 | 48.71 | EAGER - JAKE | CORNWALL HILL |
| 23 | 54.26 | KOKO - KOKETSO | SUTHERLAND |
| 24 | 56.47 | NGWENYA - APHELELE | CURRO HAZELDEAN |