| Time | Date | Name | Meet |
|---|---|---|---|
| 47.07 | May 11, 2017 | Sean Lee | California CIF Southern - Div 1 Section Championships |
| 47.07 | May 11, 2019 | Connor Lee | California CIF State Championship |
| 48.53 | May 12, 2016 | Sean Lee | California CIF Southern - Div 1 Section Championships |
| 48.98 | May 14, 2015 | Sean Lee | 15 California Southern - Div 1 Section Championships |
| 49.93 | May 6, 2008 | Andrew Muller | CIF-SS DIV II |
| 54.40 | May 10, 2005 | Andrew Muller | CIF-SS Division I |
