| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Robert Jopp | John McGlashan | 57.15q |
| 2 | Brodie McClelland | St Kevin's College | 1:00.88q |
| 3 | David Peterson | Kaikorai Valley College | 1:02.53q |
| 4 | Simeon Ramsay | Kavanagh College | 1:04.86q |
| 5 | Hady Riad | Kavanagh College | 1:09.70q |
| -- | Jesse Cranston | Kings High School | DNS |
| -- | Scott Pauly | South Otago High School | DNS |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Rodney Bungard | St Kevin's College | 56.63q |
| 2 | Cody Benck | Dunstan High School | 59.88q |
| 3 | Abe Taucher | Dunstan High School | 1:09.41q |
| -- | Jarrod Casey | Taieri College | DQ |
| -- | Dylan Hills | Kaikorai Valley College | DNS |
| -- | Ayden Watt | Kings High School | DQ |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Rodney Bungard | St Kevin's College | 54.71 |
| 2 | Robert Jopp | John McGlashan | 56.39 |
| 3 | Brodie McClelland | St Kevin's College | 59.50 |
| 4 | Cody Benck | Dunstan High School | 1:00.53 |
| 5 | Simeon Ramsay | Kavanagh College | 1:01.21 |
| 6 | Hady Riad | Kavanagh College | 1:05.89 |
| 7 | Abe Taucher | Dunstan High School | 1:06.80 |
| -- | David Peterson | Kaikorai Valley College | DNS |