| Name | Time | Date | Meet |
|---|---|---|---|
| Arielle Brotman | 53.92 | May 1, 2023 | CIF San Diego Section Div II Championship |
| Allie Knight | 56.22 | May 18, 2010 | 2010 CIF San Diego Section - Division II Championships |
| Allie Knight | 55.75 | May 19, 2009 | 2009 CIF San Diego Division II Championships |
| Gloria Benefield | 57.30 | May 16, 2006 | CIF - San Diego Section - Division II |
