| 400m SURFACE | State | Club | Time | Venue | Date |
| Mens | |||||
| Jeremy Morse | TAS | Tas. Fins. | 3:30.62 | Dongguan, China | 28/10/1994 |
| Womens | |||||
| Noemi Domonkos | NSW | Dolfinz | 3:56.94 | Tuggeranong | 10/03/2002 |
| Mens Masters | |||||
| 25-34 yrs | |||||
| Derek Heiden | TAS | Orcas | 3:36.13 | Dunauvjaros, Hungary | 23/08/1996 |
| 35-44 yrs | |||||
| Andrew Maver | TAS | Taz Tridentz | 4:14.35 | Dunauvjaros, Hungary | 23/08/1996 |
| 45-54 yrs | |||||
| Andrew Maver | TAS | Taz Tridentz | 4.28.09 | Hobart | 5/12/2004 |
| 55-64 yrs | |||||
| Ian Goudie | TAS | Taz Tridentz | 4.43.64 | Hobart | 05/12/2004 |
| 65-74 yrs | |||||
| Charles Stringer | TAS | Taz Tridentz | 5:58.64 | Clarence | 7/09/2002 |
| Womens Masters | |||||
| 25-34 yrs | |||||
| Noemi Domonkos | NSW | Dolfinz | 3:56.94 | Tuggeranong | 10/03/2002 |
| 35-44 yrs | |||||
| Fiona Leard | NSW | Dolfinz | 4.58.37 | Hoppers Crossing, Melbourne | 23/07/2005 |
| 45-54 yrs | |||||
| Faye Hoppitt | TAS | Hobart Masters | 5:15.66 | MLC, Sydney | 27/06/04 |
| 55-64 yrs | |||||
| Storm Foulkes | TAS | Taz Tridentz | 6:22.57 | AIS Canberra | 28/09/2008 |
| 65-74 yrs | |||||
| Jan Chew | TAS | Hobart Masters | 6.45.62 | Hoppers Crossing, Melbourne | 23/07/2005 |
| Junior Boys | |||||
| 11 yrs & under | |||||
| Huw Warmenhoven | ACT | Vikings | 5:18.03 | MLC, Sydney | 27/06/04 |
| 12-13 yrs | |||||
| Jayden Malala | ACT | Vikings | 4:44.25 | AIS, Canberra | 28/09/2008 |
| 14-15 yrs | |||||
| Michael Lane | TAS | Tasmanian Fin Swimming | 3:57.67 | Perth | 7/01/1993 |
| 16-17 yrs | |||||
| Jeremy Morse | TAS | Tasmanian Fin Swimming | 3:46.67 | Clarence | 20/06/1992 |
| Junior Girls | |||||
| 11 yrs & under | |||||
| Azure-Rose Ryan | QLD | Marlins | 5:44.40 | Valley, Brisbane | 8/12/2001 |
| 12-13 yrs | |||||
| Fiona Maver | TAS | Taz Tridentz | 4:26.77 | Adelaide | 2/01/1996 |
| 14-15 yrs | |||||
| Fiona Maver | TAS | Taz Tridentz | 4:04.51 | Hobart | 8/11/1997 |
| 16-17 yrs | |||||
| Carolyn Harrison | TAS | 4:06.29 | Clarence | 26/09/1993 | |