| 1) Central College | 4:00.18 (02/23) | 4:01.38 (02/09) | 4:08.43 (01/25) | 4:08.82 (02/15) | 4:09.56 (02/01) | 4:20.60 (01/25) | 4:22.37 (02/15) | |
| 2) Washington U. | 4:00.18 (01/26) | 4:01.42 (02/23) | 4:05.07 (02/09) | 4:06.17 (01/19) | 4:06.45 (01/12) | 4:06.57 (12/01) | 4:07.09 (02/02) | 4:08.05 (02/09) |