| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Laura Smith | Villa Maria College | 1:02.99q |
| 2 | Sian English | Columba College | 1:04.98q |
| 3 | Laura Hood | Mt Hutt College | 1:06.37q |
| 4 | Emily Boyd | Rangi Ruru Girls' School | 1:07.64q |
| 5 | Anna Cross | Otago Girls High School | 1:08.03q |
| -- | Philippa Trevella | Rangi Ruru Girls' School | DQ |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Caitlin Henderson | Timaru Girls' High School | 1:05.18q |
| 2 | Hannah Adamson | Southland Girls' High School | 1:06.40q |
| 3 | Rebecca Batin | Rudolf Steiner School | 1:08.61q |
| 4 | Katie Mullholland | Taieri College | 1:08.62 |
| 5 | Charlotte Homan | Kavanagh College | 1:10.60 |
| 6 | Krystal Barlow | Mackenzie College | 1:12.57 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Laura Smith | Villa Maria College | 1:03.44 |
| 2 | Hannah Adamson | Southland Girls' High School | 1:03.74 |
| 3 | Caitlin Henderson | Timaru Girls' High School | 1:05.40 |
| 4 | Laura Hood | Mt Hutt College | 1:05.67 |
| 5 | Sian English | Columba College | 1:06.21 |
| 6 | Rebecca Batin | Rudolf Steiner School | 1:08.50 |
| 7 | Emily Boyd | Rangi Ruru Girls' School | 1:08.92 |
| 8 | Anna Cross | Otago Girls High School | 1:09.47 |