| MARK | ATHLETE NAME | AFFILIATION | |
| 44.88 | OSTROW, KELLY | (Upland) | |
| 44.98 | WHITE, KIRAH | (Edison (Stock)) | |
| 46.66 | MUSKRAT, ASHLEY | (North Bakersfield) | |
| 46.96 | DINKINS, LAURA | (Eisenhower) | |
| 47.39 | MARSH, EMILY | (Pullman) | |
| 47.78 | BEREAL, JAMIE | (Bellflower) | |
| 47.91 | BINNS, MARLYSSA | (Eisenhower) | |
| 48.86 | WATKINS, SADE | (Victor Valley) |