| 1) | Washington, Christina | Lynchburg | 57.37 (05/10) | 57.79 (04/20-04/21) | 58.18 (03/31) | 58.33 (05/06) | 58.53 (03/23-03/24) | 58.60 (05/17) | 58.89 (05/13) | 59.77 (04/27-04/28) |
| 2) | Ajinjeru, Christine | Grinnell | 57.37 (05/11-05/12) | 58.00 (05/11-05/12) | 58.75 (04/13-04/14) | 58.76 (03/23-03/24) | 59.25 (04/28) |