Following are the results for event 18, filtered to show race 1 semi-finals races.
| Semi-final 1 | [ race results || race reproduction ] | |||
|---|---|---|---|---|
| 1st | Whanganui High School 1 | [ crew ] | 8:18:12 | 18.1.3 |
| 2nd | St Margaret's College 1 | [ crew ] | 8:25:37 | 18.1.1 |
| 3rd | St Peter's School 1 | [ crew ] | 8:33:12 | 18.1.5 |
| 4th | Tauranga Girls College 1 | [ crew ] | 8:34:99 | 18.1.4 |
| 5th | Kaiapoi High School 1 | [ crew ] | 8:53:72 | 18.1.2 |
| 6th | Whanganui City College 1 | [ crew ] | 8:55:14 | 18.1.6 |
| 7th | Burnside High School 1 | [ crew ] | 9:03:88 | 18.1.7 |
| 8th | Christchurch Girls High School 1 | [ crew ] | 9:07:56 | 18.1.8 |
| Scratched crews (Semi-finals) | ||||
| SCR | JHAR 1 | [ crew ] | _:__:__ | 18.1.7 |