| 1) | Peel, Georgia | Florida State | 4:21.68 (05/16-05/17) | 4:22.14 (04/11-04/12) | 4:23.68 (04/17-04/19) | 4:26.11 (05/04) | 4:33.34 (04/17-04/19) | ||
| 2) | Gray, Sydney | California | 4:21.68 (04/12) | 4:22.18 (04/26) | 4:24.68 (05/17-05/18) | 4:26.69 (04/05) | 4:27.21 (03/08) | 4:27.58 (05/17-05/18) | 4:28.63 (05/04) |