| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Anna Tucker | Takapuna Grammar School | 1:00.07q |
| 2 | Georgie-Rose Boyd | St Peter's School | 1:00.14q |
| 3 | Teeka Randell | Morrinsville College | 1:00.28q |
| 4 | Jean-Mari Riekert | Birkenhead College | 1:02.18q |
| 5 | Nikkita McIntyre | St Andrew's College | 1:02.26 |
| 6 | Alicia O'Connor | Hillcrest High School | 1:02.43 |
| 7 | Lily Rushworth | Kristin School | 1:02.48 |
| 8 | Madison Rattray | Hamilton Girls High School | 1:03.01 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Mia Powell | Lynfield College | 55.96q |
| 2 | Amelie Fairclough | Western Springs College | 57.51q |
| 3 | Jordan Evans-Tobata | Otago Girls High School | 58.43q |
| 4 | Alex Rees Thomas | St Margaret's College | 59.86q |
| 5 | Charlotte Baker | Whanganui High School | 1:02.86 |
| 6 | Tori Clarke | St Pauls Collegiate (Hamilton) | 1:03.11 |
| 7 | Madeline Thomas | Craighead Diocesan School | 1:03.45 |
| 8 | Keana Woodfield | St Peter's School | 1:07.06 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Mia Powell | Lynfield College | 54.86 |
| 2 | Amelie Fairclough | Western Springs College | 56.30 |
| 3 | Jordan Evans-Tobata | Otago Girls High School | 57.86 |
| 4 | Alex Rees Thomas | St Margaret's College | 58.78 |
| 5 | Teeka Randell | Morrinsville College | 59.24 |
| 6 | Anna Tucker | Takapuna Grammar School | 59.98 |
| 7 | Jean-Mari Riekert | Birkenhead College | 1:03.22 |
| 8 | Georgie-Rose Boyd | St Peter's School | 1:08.38 |