Male:
| Age: | Time: | Date: | Who: |
| 9 | |||
| 10 | 6:02.42 – SC | 01 / 01 / 2010 | Nathan Roome |
| 11 | 5:25.60 – SC | 01 / 06 / 2011 | William Gayne |
| 12 | 5:06.90 – SC | 01 / 06 / 2012 | William Gayne |
| 13 | 4:55.57 – SC 5:28.67 – LC | 02 / 03 / 2013 01 / 02 / 2020 | William Gayne Reuben Fox |
| 14 | 4:58.22 – SC 5:19.00 – LC | 12 / 02 / 2011 16 / 01 / 2016 | Elliot Woodward Luke Mitchell |
| 15 | 4:48.30 – SC 5:20.10 – LC | 01 / 06 / 2001 15 / 01 / 2022 | James Brown Reuben Fox |
| 16 | 4:41.20 – SC 4:47.41 – LC | 01 / 06 / 2016 16 / 01 / 2016 | William Gayne William Gayne |
| 17+ | 4:56.57 – SC | 01 / 06 / 2003 | Alexander Bunting |
Female:
| Age: | Time: | Date: | Who: |
| 9 | |||
| 10 | 6:41.56 – SC | 10 / 03 / 2018 | Katie Merryweather |
| 11 | 5:41.06 – SC 5:47.74 – LC | 01 / 06 / 2010 01 / 02 / 2020 | Eden Michell Pippa Hickman |
| 12 | 5:22.30 – SC 5:38.37 – LC | 01 / 06 / 2011 21 / 01 / 2023 | Eden Michell Belle Bacon |
| 13 | 5:20.41 – SC 5:31.37 – LC | 04 / 12 / 2021 15 / 01 / 2022 | Pippa Hickman Pippa Hickman |
| 14 | 5:22.98 – SC 5:26.44 – LC | 04 / 12 / 2021 21 / 01 / 2023 | Neve Bursztyn Pippa Hickman |
| 15 | 5:06.64 – SC 5:14.53 – LC | 02 / 12 / 2023 20 / 01 / 2024 | Pippa Hickman Pippa Hickman |
| 16 | 5:27.35 – SC | 01 / 06 / 2001 | Katie Loker |
| 17+ | 5:47.21 – SC | 16 / 03 / 2024 | Katie Merryweather |