| Name | Time | Date | Meet |
|---|---|---|---|
| Arielle Brotman | 49.79 | May 1, 2023 | CIF San Diego Section Div II Championship |
| Ciara Franke | 51.38 | May 19, 2017 | 2017 California CIF Swimming and Diving State Championships |
| Haren Alanis | 51.74 | May 19, 2009 | 2009 CIF San Diego Division II Championships |
| Kelly Wahl | 53.06 | May 16, 2006 | CIF - San Diego Section - Division II |
