Following are the results for event 20, filtered to show race 3 semi-finals races.
| Semi-final 3 | [ race results ] | |||
|---|---|---|---|---|
| 1st | Timaru Girls High School 1 | [ crew ] | 8:33.79 | 20.3.6 |
| 2nd | Wellington Girls College 1 | [ crew ] | 8:36.17 | 20.3.7 |
| 3rd | Queen Margaret College 1 | [ crew ] | 8:38.65 | 20.3.5 |
| 4th | Columba College 1 | [ crew ] | 8:40.77 | 20.3.4 |
| 5th | Kavanagh College [now Trinity] 2 | [ crew ] | 8:48.88 | 20.3.2 |
| 6th | Southland Girls High School 2 | [ crew ] | 8:56.51 | 20.3.1 |
| 7th | Hillcrest High School 1 | [ crew ] | 8:56.99 | 20.3.3 |
| 8th | Ruyton Girls School (Melbourne) 1 | [ crew ] | 9:09.63 | 20.3.8 |