| 1) | Hardnett, Kelli | Houston | 54.05 (04/09) | 54.05 (04/09) | 54.31 (04/23) | 54.31 (04/23) | 54.62 (05/12-05/15) | 54.62 (05/12-05/15) | 55.59 (05/12-05/15) | 55.59 (05/12-05/15) |
| 2) | Omawahleh, Njeri | Fresno State | 54.05 (05/11-05/14) | 54.05 (05/11-05/14) | 55.10 (04/30) | 55.10 (04/30) | 55.30 (04/01-04/02) | 55.30 (04/01-04/02) | 55.31 (05/11-05/14) | 55.31 (05/11-05/14) |