| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| -- | Natahlia Cochrane-Darling | Taieri College | q |
| -- | Natalie Corbett | St Kevin's College | q |
| -- | Lily Culbertson | South Otago High School | q |
| -- | Megan Manson | St Kevin's College | q |
| -- | Fran Myers-Baird | Otago Girls High School | q |
| -- | Sophie Napper | Columba College | q |
| -- | Brianna O'Connell | Kavanagh College | q |
| -- | Aleisha Pickering | Taieri College | q |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Sophie Napper | Columba College | 1:05.92 |
| 2 | Fran Myers-Baird | Otago Girls High School | 1:07.56 |
| 3 | Natahlia Cochrane-Darling | Taieri College | 1:08.78 |
| 4 | Megan Manson | St Kevin's College | 1:10.01 |
| 5 | Lily Culbertson | South Otago High School | 1:12.06 |
| 6 | Aleisha Pickering | Taieri College | 1:12.71 |
| 7 | Natalie Corbett | St Kevin's College | 1:13.40 |
| 8 | Brianna O'Connell | Kavanagh College | 1:14.47 |