Boys
| Age | Name | Time | Date |
| 7 & U | T. Dodd | 50.61 | 12/01/1991 |
| 8 | T. Dodd | 42.98 | 18/01/1992 |
| 9 | T. Dodd | 37.38 | 12/12/1992 |
| 10 | T. Dodd | 37.20 | 11/12/1993 |
| 11 | T. Dodd | 34.03 | 10/12/1994 |
| 12 | T. Dodd | 32.66 | 09/12/1995 |
| 13 | T. Dodd | 30.03 | 07/12/1996 |
| 14 | T. Dodd | 27.72 | 06/12/1997 |
| 15 | A. Philp | 29.07 | 18/02/2023 |
| 16/17 | J. Kerr | 26.95 | 09/03/2024 |
| Open | J. Kerr | 26.95 | 09/03/2024 |
Girls
| Age | Name | Time | Date |
| 7 & U | Z. Kasprowicz | 48.36 | 6/12/2016 |
| 8 | L. Berry | 44.90 | 04/02/1984 |
| 9 | K. Allsop | 40.38 | 11/12/2010 |
| 10 | T. Mulder A. Sycamore | 38.16 | 11/11/1993 10/02/2018 |
| 11 | T. Mulder | 35.57 | 10/12/1994 |
| 12 | K. Daley | 35.03 | 06/01/1990 |
| 13 | R. Gonzalo | 31.01 | 18/02/2023 |
| 14 | L. Mcpherson | 29.42 | 18/02/2023 |
| 15 | D. Kralka | 29.54 | 18/02/2023 |
| 16/17 | A. Murray | 30.98 | 18/02/2023 |
| Open | L. Mcpherson | 29.42 | 18/02/2023 |