| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Grace Godfrey | Wanganui Collegiate | 1:00.92q |
| 2 | Georgia Brierly | Rodney College | 1:01.66q |
| 3 | Maddy Tims | St Paul's Collegiate Ham | 1:02.94 |
| 4 | Maddie Robinson | Upper Hutt College | 1:05.02 |
| 5 | Alana Inglis Beckett | Motueka High School | 1:05.67 |
| 6 | Lahana Reeves | Riccarton High School | 1:06.59 |
| 7 | Nova Hammett | Christchurch Girls High School | 1:08.62 |
| 8 | Jane Prongsanthia | Avondale College | 1:09.20 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Anna Hayward | Craighead Diocesan School | 1:00.48q |
| 2 | Maria Sartin | Hamilton Girls High School | 1:01.05q |
| 3 | Charlotte Holland | St Cuthbert's College | 1:01.29q |
| 4 | Monique Whiteman | Palmerston North Girls High Sc | 1:03.61 |
| 5 | Meredith Seeto | Rangi Ruru Girls School | 1:05.29 |
| 6 | Teilah-Rose Templeton | Southland Girls High School | 1:06.83 |
| 7 | Tasmin Kennedy | St Mary's College Wgnt | 1:08.27 |
| -- | Grace Jack | Kristin School | DNF |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Izzy Neal | Motueka High School | 57.76q |
| 2 | Deigna Khamal | Cambridge High School | 59.47q |
| 3 | Pieta Hansen | St Andrews College | 1:00.44q |
| 4 | Suzie Morrow | Dunstan High School | 1:02.57 |
| 5 | Jessica Dillon-Springfield | Hawera High School | 1:02.67 |
| 6 | Laura Clarke | Papanui High School | 1:03.14 |
| 7 | Jordyn Blake | St Margaret's College | 1:03.24 |
| 8 | Anna Malin | Middleton Grange School | 1:09.21 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Izzy Neal | Motueka High School | 55.84 |
| 2 | Anna Hayward | Craighead Diocesan School | 57.13 |
| 3 | Deigna Khamal | Cambridge High School | 58.63 |
| 4 | Grace Godfrey | Wanganui Collegiate | 58.87 |
| 5 | Maria Sartin | Hamilton Girls High School | 1:01.12 |
| 6 | Charlotte Holland | St Cuthbert's College | 1:02.18 |
| 7 | Pieta Hansen | St Andrews College | 1:02.20 |
| 8 | Georgia Brierly | Rodney College | 1:03.39 |