| 1) | Gonzalez, Melissa | Texas | 59.34 (05/03-05/05) | 59.37 (04/13) | 1:00.01 (04/20) | 1:00.16 (03/14-03/16) | 1:00.35 (03/27-03/30) | 1:00.48 (05/03-05/05) | 1:00.73 (04/04-04/06) | |
| 2) | Long, Diana | Wyoming | 59.34 (05/08-05/11) | 59.53 (05/08-05/11) | 1:00.45 (05/03) | 1:00.64 (04/18-04/20) | 1:00.80 (04/13) | 1:00.83 (04/26-04/27) | 1:01.24 (03/30) | 1:01.28 (03/22-03/23) |
| 3) | Peterson, Alicia | Texas | 59.34 (05/03-05/05) | 1:00.38 (04/13) | 1:00.41 (05/03-05/05) | 1:01.86 (03/27-03/30) | 1:03.61 (04/20) |