Event 508 Boys 12 Year Olds 400 Metre Individual Medley
| Name | Age | Club | Time | Splits
|
| 1 | Roddy Horne | 12 | Perth City | 6:05.69 | 41.42 | 1:33.41 | 2:17.79 | 3:02.69 |
| 3:53.76 | 4:45.57 | 5:27.93 | 6:05.69 |
| 2 | Ewan Simpson | 12 | Kinross | 6:11.40 | 37.87 | 1:30.14 | 2:16.67 | 3:02.96 |
| 3:56.00 | 4:50.13 | 5:31.49 | 6:11.40 |
Event 508 Boys 13-14 400 Metre Individual Medley
| Name | Age | Club | Time | Splits
|
| 1 | Joe Lipworth | 14 | Dun City Aqu | 4:55.88 | 31.18 | 1:08.05 | 1:46.21 | 2:23.31 |
| 3:05.37 | 3:47.38 | 4:22.14 | 4:55.88 |
| 2 | Stephen A Milne | 13 | Perth City | 5:21.37 | 34.65 | 1:14.04 | 1:55.00 | 2:34.22 |
| 3:23.17 | 4:12.23 | 4:48.14 | 5:21.37 |
Event 508 Boys 15-16 400 Metre Individual Medley
| Name | Age | Club | Time | Splits
|
| 1 | Peter Stewart | 15 | Dun City Aqu | 4:49.18 | 31.51 | 1:08.93 | 1:46.74 | 2:23.73 |
| 3:01.30 | 3:40.77 | 4:16.20 | 4:49.18 |
| 2 | Eamon Rivers | 15 | Perth City | 5:03.41 | 30.01 | 1:05.24 | 1:43.45 | 2:21.77 |
| 3:04.99 | 3:49.66 | 4:27.89 | 5:03.41 |
Event 508 Boys 17 & Over 400 Metre Individual Medley
| Name | Age | Club | Time | Splits
|
| 1 | Ross Clark | 20 | Dun City Aqu | 4:36.91 | 29.40 | 1:04.41 | 1:41.98 | 2:18.98 |
| 2:54.66 | 3:32.26 | 4:06.35 | 4:36.91 |