| Name | Time | Date | Meet |
|---|---|---|---|
| Samuel Quarles | 43.17 | May 12, 2023 | CIF State Championships |
| Samuel Quarles | 43.65 | May 1, 2023 | CIF San Diego Section Div II Championship |
| Rex Butler | 45.81 | May 18, 2010 | 2010 CIF San Diego Section - Division II Championships |
| Andrew Ireland | 46.12 | May 19, 2009 | 2009 CIF San Diego Division II Championships |
| Preston Lujan | 48.88 | May 16, 2006 | CIF - San Diego Section - Division II |
