| 1) | Allen, Erin | Washington St. | 1:00.50 (05/04-05/12) | 1:00.61 (03/29-03/30) | 1:00.63 (04/27) | 1:00.97 (03/22-03/23) | 1:01.81 (04/06) | 1:02.37 (04/18-04/20) |
| 2) | Niemeir, Katie | Montana State | 1:00.50 (05/08-05/11) | 1:01.59 (05/08-05/11) | 1:01.63 (04/11-04/13) | 1:01.83 (04/27) | 1:03.00 (04/04-04/06) |