| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Aleia Wiggins | Marian College | 1:05.54q |
| 2 | Sammy Winward | Riccarton High School | 1:09.73q |
| 3 | Lauren Teape | Avonside Girls High Schoo | 1:11.38q |
| 4 | Ruby Somerville | Papanui High School | 1:12.20q |
| 5 | Eliza King | Villa Maria College | 1:19.98q |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Stacey Hildreth | Christchurch Girls High S | 1:07.30q |
| 2 | Leah Temesvari | Kaiapoi High School | 1:12.90q |
| 3 | Tess Maitland | Villa Maria College | 1:16.99q |
| 4 | Sophie Shingleton | Villa Maria College | 1:21.42 |
| -- | Kirsten Hay | Burnside High School | DNS |
| -- | Leah Woods | Rangiora High School | DNS |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Aleia Wiggins | Marian College | 1:03.82 |
| 2 | Stacey Hildreth | Christchurch Girls High S | 1:06.49 |
| 3 | Sammy Winward | Riccarton High School | 1:08.97 |
| 4 | Leah Temesvari | Kaiapoi High School | 1:11.07 |
| 5 | Ruby Somerville | Papanui High School | 1:13.94 |
| 6 | Tess Maitland | Villa Maria College | 1:17.01 |
| 7 | Lauren Teape | Avonside Girls High Schoo | 1:17.61 |
| 8 | Eliza King | Villa Maria College | 1:19.02 |