History of the National Record 400m surface long course
| Time | Name | Team | Date | Location |
|---|---|---|---|---|
| 03:45.45 | Dezso Laszlo | LFC | 2019-04-27 | Ravenna, ITA |
| 04:01.99 | Simon Kidd | SSF | 2009-05-16 | Eindhoven, NED |
| 04:02.28 | Simon Kidd | SSF | 2007-04-15 | Antwerp, BEL |
| 04:08.21 | Simon Kidd | SSF | 2007-02-03 | Hobart, AUS |
| 04:15.25 | Alaric Smith | FOG | 2002-02-23 | Vasteras, SWE |
