Boys
| Age | Name | Time | Date |
| 7 & U | K. Hanson | 53.71 | 25/11/1989 |
| 8 | S. Millar | 53.10 | 19/11/1983 |
| 9 | R. Eager | 48.85 | 01/11/1987 |
| 10 | A. Sate | 45.79 | 03/11/2001 |
| 11 | T. Dodd | 44.47 | 05/11/1994 |
| 12 | H. Ward | 37.94 | 30/11/2024 |
| 13 | J. Lewis | 37.67 | 01/11/1997 |
| 14 | T. Dodd | 35.37 | 01/11/1997 |
| 15 | D. Potega/J. Law | 34.54 | 02/12/2023 |
| 16/17 | N. Christou | 32.64 | 06/12/2025 |
| Open | N. Christou | 32.64 | 06/12/2025 |
Girls
| Age | Name | Time | Date |
| 7 & U | W. Ash | 55.80 | 27/11/1986 |
| 8 | E. Graham | 52.43 | 24/11/1990 |
| 9 | J. Botha | 45.94 | 06/12/2025 |
| 10 | J. Howitt | 44.80 | 28/11/1987 |
| 11 | S. Graham | 41.44 | 05/11/1994 |
| 12 | J. Howitt | 40.50 | 25/11/1989 |
| 13 | A. Furlong | 37.67 | 03/12/2022 |
| 14 | A. Furlong | 37.98 | 02/12/2023 |
| 15 | S. Graham | 37.46 | 31/10/1998 |
| 16/17 | K. Furlong | 37.69 | 03/12/2022 |
| Open | B. Zhang | 36.43 | 30/11/2024 |