| Time | Date | Name | Meet |
|---|---|---|---|
| 4:23.54 | March 11, 2023 | Diego Nosack | Speedo Sectionals - Federal Way |
| 4:25.72 | March 17, 2018 | Trent Martinez | Speedo Champions Series - Federal Way |
| 4:27.61 | Dec. 11, 2014 | Patrick Mulcare | Speedo WInter Junior Championships |
| 4:28.12 | March 16, 2013 | Cameron Stitt | Speedo Champions Series - Federal Way |
| 4:34.01 | March 12, 2011 | Cameron Stitt | Speedo Sectionals - Federal Way, WA |
| 4:37.01 | March 6, 2003 | Matt Morton | American Short Course Championships |
