| 1) | Montgomery, Sara | Avila | 1:03.96 (04/10-04/11) | 1:03.99 (04/17) | 1:04.76 (05/01-05/02) | 1:06.99 (04/04) | 1:07.11 (03/28) | |
| 2) | Barger, Brittney | Culver-Stockton | 1:03.96 (05/01-05/02) | 1:04.06 (04/25) | 1:04.46 (04/10-04/11) | 1:05.09 (04/03) | 1:05.59 (03/21) | 1:05.65 (04/18) |