Following are the results for event 12, filtered to show race 1 semi-finals races.
| Semi-final 1 | [ race results || race reproduction ] | |||
|---|---|---|---|---|
| 1st | Westlake Boys High School 1 | [ crew ] | 6:59:24 | 12.1.0 |
| 2nd | Cullinane College 1 | [ crew ] | 7:04:30 | 12.1.0 |
| 3rd | Bethlehem College 1 | [ crew ] | 7:05:78 | 12.1.0 |
| 4th | St Kentigern College 1 | [ crew ] | 7:08:31 | 12.1.0 |
| 5th | Marlborough Boys College 1 | [ crew ] | 7:11:33 | 12.1.0 |
| 6th | St Bede's College 1 | [ crew ] | 7:19:79 | 12.1.0 |
| 7th | Hauraki Plains College 1 | [ crew ] | 7:25:55 | 12.1.0 |
| 8th | Southland Boys High School 1 | [ crew ] | 7:25:94 | 12.1.0 |