Male:
| Age: | Time: | Date: | Who: |
| 9 | 1:16.87 – SC | 12 / 07 / 2009 | William Gayne |
| 10 | 1:07.30 – SC 1:16.04 – LC | 01 / 06 / 2010 18 / 01 / 2020 | William Gayne Jack Welbourne |
| 11 | 1:01.70 – SC | 01 / 06 / 2011 | William Gayne |
| 12 | 0:59.30 – SC 1:06.54 – LC | 01 / 06 / 2012 19 / 01 / 2019 | William Gayne Reuben Fox |
| 13 | 0:56.97 – SC 1:00.11 – LC | 01 / 06 / 2013 03 / 02 / 2018 | William Gayne Kyle Merryweather |
| 14 | 0:53.95 – SC 0:59.53 – LC | 15 / 03 / 2014 19 / 01 / 2019 | William Gayne Kyle Merryweather |
| 15 | 0:54.23 – SC 0:56.54 – LC | 01 / 12 / 2014 18 / 01 / 2020 | William Gayne Kyle Merryweather |
| 16 | 0:52.80 – SC 0:54.31 – LC | 01 / 06 / 2016 16 / 01 / 2016 | William Gayne William Gayne |
| 17+ | 0:53.81 – SC 0:55.74 – LC | 01 / 12 / 2016 07 / 05 / 2023 | William Gayne Kyle Merryweather |
Female:
| Age: | Time: | Date: | Who: |
| 9 | 1:17.64 – SC | 15 / 07 / 2017 | Eve Turnbull |
| 10 | 1:09.47 – SC 1:13.82 – LC | 14 / 07 / 2018 20 / 01 / 2018 | Eve Turnbull Eve Turnbull |
| 11 | 1:04.70 – SC 1:07.11 – LC | 13 / 07 / 2019 27 / 04 / 2019 | Eve Turnbull Eve Turnbull |
| 12 | 1:03.76 – SC 1:04.88 – LC | 14 / 02 / 2009 01 / 02 / 2020 | Mia Sallis Eve Turnbull |
| 13 | 1:03.60 – SC 1:04.74 – LC | 01 / 06 / 2009 25 / 02 / 2023 | Mia Sallis Abbey Turnbull |
| 14 | 1:00.44 – SC 1:01.90 – LC | 21 / 05 / 2022 23 / 07 / 2022 | Eve Turnbull Eve Turnbull |
| 15 | 0:59.59 – SC 1:00.22 – LC | 18 / 03 / 2023 29 / 04 / 2023 | Eve Turnbull Eve Turnbull |
| 16 | 0:59.20 – SC 1:00.46 – LC | 22 / 06 / 2024 04 / 05 / 2024 | Eve Turnbull Eve Turnbull |
| 17+ | 1:00.64 – SC 1:05.00 – LC | 21 / 05 / 2022 19 / 02 / 2022 | Jessica Mitchell Jessica Mitchell |