| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Isla Tilbury | Marlborough Girls College | 1:00.48q |
| 2 | Peggy Taylor | Mt Albert Grammar | 1:02.01q |
| 3 | Violet Fisher | Solway College | 1:05.08q |
| 4 | Ava Edge | St Matthew's Collegiate | 1:05.26q |
| 5 | Olivia Gilbertson | Whanganui Collegiate | 1:07.40 |
| 6 | Amya Bird | Timaru Girls' High School | 1:07.74 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Amelia Henstock | Villa Maria College | 1:01.03q |
| 2 | Rebekah Pratten | Cashmere High School | 1:03.06q |
| 3 | Grace Fannin | Whanganui Girls' College | 1:04.24q |
| 4 | Alessandra Jowsey | Villa Maria College | 1:06.07q |
| 5 | Alys Hatton | St Margaret's College | 1:08.33 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Ruby Simon | Christchurch Girls High School | 1:01.65q |
| 2 | Ruby Mahuika | Craighead Diocesan School | 1:02.36q |
| 3 | Esme Reid | Baradene College | 1:02.57q |
| 4 | Isabella Irvine-McBride | Nga Tawa Diocesan School | 1:06.55 |
| 5 | Freya Easton | Palmerston North Girls High Sc | 1:06.56 |
| 6 | Lili Ganivet | Havelock North High School | 1:08.55 |
| 7 | Chloe Jamieson | Nga Tawa Diocesan School | 1:10.18 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Zita Meo | Napier Girls High School | 1:01.70q |
| 2 | Tilly O'Sullivan | Rangi Ruru Girls' School | 1:02.23q |
| 3 | Pera Gordon | Cashmere High School | 1:03.09q |
| 4 | Faith Coffin | Craighead Diocesan School | 1:04.88q |
| 5 | Stella Taiaroa | Ellesmere College | 1:05.92q |
| 6 | Matilda McMullen | Nayland College | 1:06.72 |
| 7 | Natasha McPherson | Christchurch Girls High School | 1:09.50 |
| Placing | Athlete | Team | Semi Finals |
|---|---|---|---|
| 1 | Zita Meo | Napier Girls High School | 58.08q |
| 2 | Esme Reid | Baradene College | 58.96q |
| 3 | Isla Tilbury | Marlborough Girls College | 59.00q |
| 4 | Peggy Taylor | Mt Albert Grammar | 59.28q |
| 5 | Rebekah Pratten | Cashmere High School | 1:03.71 |
| 6 | Violet Fisher | Solway College | 1:04.48 |
| 7 | Faith Coffin | Craighead Diocesan School | 1:05.30 |
| 8 | Alessandra Jowsey | Villa Maria College | 1:05.50 |
| Placing | Athlete | Team | Semi Finals |
|---|---|---|---|
| 1 | Amelia Henstock | Villa Maria College | 1:00.67q |
| 2 | Tilly O'Sullivan | Rangi Ruru Girls' School | 1:01.07q |
| 3 | Ruby Simon | Christchurch Girls High School | 1:01.80q |
| 4 | Ruby Mahuika | Craighead Diocesan School | 1:03.01q |
| 5 | Grace Fannin | Whanganui Girls' College | 1:03.32 |
| 6 | Ava Edge | St Matthew's Collegiate | 1:05.70 |
| 7 | Stella Taiaroa | Ellesmere College | 1:05.76 |
| 8 | Pera Gordon | Cashmere High School | 1:06.97 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Zita Meo | Napier Girls High School | 57.77 |
| 2 | Isla Tilbury | Marlborough Girls College | 58.34 |
| 3 | Esme Reid | Baradene College | 58.41 |
| 4 | Peggy Taylor | Mt Albert Grammar | 59.35 |
| 5 | Amelia Henstock | Villa Maria College | 59.67 |
| 6 | Tilly O'Sullivan | Rangi Ruru Girls' School | 59.92 |
| 7 | Ruby Simon | Christchurch Girls High School | 1:01.52 |
| 8 | Ruby Mahuika | Craighead Diocesan School | 1:03.95 |