| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Tayler Trow | Palmerston North Girls High Sc | 49.38q |
| 2 | Grace Fannin | Whanganui Girls' College | 49.60q |
| 3 | Juliet McKinlay | Whanganui Collegiate | 49.62q |
| 4 | Maia Graham | St Peter's School | 51.43 |
| 5 | Lula Free | Westlake Girls High School | 55.14 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Amani Farry | St Mary's College (Auckland) | 48.17q |
| 2 | Molly McManus | Waimea College | 49.62q |
| 3 | Isla Jones | Whanganui High School | 50.88q |
| 4 | Ryleigh Gale YC | Marlborough Girls College | 51.03 |
| 5 | India Nash | St Mary's College (Auckland) | 51.44 |
| -- | Tilly Darke | Whanganui Collegiate | F |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Eva Jeffries | St Peter's School | 48.15q |
| 2 | Ellie Beever | Nayland College | 49.77q |
| 3 | Faith Coffin | Craighead Diocesan School | 53.73 |
| 4 | Maisie Simpson | Havelock North High School | 54.05 |
| 5 | Zara Herring | St Peter's School | 58.44 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Eva Jeffries | St Peter's School | 46.45 |
| 2 | Tayler Trow | Palmerston North Girls High Sc | 47.96 |
| 3 | Ellie Beever | Nayland College | 48.40 |
| 4 | Juliet McKinlay | Whanganui Collegiate | 49.62 |
| 5 | Grace Fannin | Whanganui Girls' College | 49.70 |
| 6 | Amani Farry | St Mary's College (Auckland) | 51.82 |
| 7 | Isla Jones | Whanganui High School | 53.38 |
| -- | Molly McManus | Waimea College | DNS |