Male:
| Age: | Time: | Date: | Who: |
| 9 | 1:41.99 – SC | 01 / 06 / 2012 | Asher Huffen |
| 10 | 1:31.75 – SC 1:43.49 – LC | 01 / 01 / 2010 01 / 02 / 2020 | Nathan Roome Jack Welbourne |
| 11 | 1:23.83 – SC 1:41.06 – LC | 01 / 01 / 2011 03 / 02 / 2024 | Nathan Roome Tyler Swinscoe |
| 12 | 1:17.49 – SC 1:28.89 – LC | 01 / 01 / 2008 02 / 02 / 2019 | Lewis Wiley Reuben Fox |
| 13 | 1:15.11 – SC 1:24.72 – LC | 01 / 01 / 2009 01 / 02 / 2020 | Lewis Wiley Reuben Fox |
| 14 | 1:11.68 – SC 1:18.71 – LC | 01 / 06 / 2014 02 / 02 / 2019 | William Gayne Kyle Merryweather |
| 15 | 1:13.65 – SC 1:17.26 – LC | 01 / 06 / 2015 01 / 02 / 2020 | William Gayne Kyle Merryweather |
| 16 | 1:12.20 – SC 1:13.91 – LC | 01 / 06 / 2016 16 / 01 / 2016 | William Gayne William Gayne |
| 17+ | 1:09.45 – SC 1:12.99 – LC | 01 / 06 / 2003 03 / 02 / 2024 | Alexander Bunting Kyle Merryweather |
Female:
| Age: | Time: | Date: | Who: |
| 9 | 1:47.14 – SC 1:50.32 – LC | 15 / 07 / 2017 10 / 03 / 2019 | Eve Turnbull Anja Knight |
| 10 | 1:35.50 – SC 1:34.04 – LC | 01 / 06 / 2009 02 / 02 / 2019 | Eden Michell Pippa Hickman |
| 11 | 1:24.72 – SC 1:27.44 – LC | 30 / 11 / 2019 01 / 02 / 2020 | Pippa Hickman Pippa Hickman |
| 12 | 1:24.17 – SC 1:26.11 – LC | 14 / 05 / 2022 01 / 02 / 2020 | Belle Bacon Neve Bursztyn |
| 13 | 1:19.52 – SC 1:19.72 – LC | 27 / 11 / 2021 05 / 02 / 2022 | Pippa Hickman Pippa Hickman |
| 14 | 1:16.28 – SC 1:16.31 – LC | 28 / 01 / 2023 04 / 02 / 2023 | Pippa Hickman Pippa Hickman |
| 15 | 1:13.80 – SC 1:14.48 – LC | 25 / 11 / 2023 03 / 02 / 2024 | Pippa Hickman Pippa Hickman |
| 16 | 1:16.21 – SC 1:23.34 – LC | 18 / 05 / 2024 03 / 02 / 2024 | Pippa Hickman Eve Turnbull |
| 17+ | 1:17.49 – SC 1:27.21 – LC | 01 / 06 / 1990 02 / 02 / 2019 | Helen Gorman Abbie Quarton |