| Name | Time | Date | Meet |
|---|---|---|---|
| Alex Walsh | 4:07.98 | March 1, 2019 | Southern Premier Invitational |
| Ella Nelson | 4:10.10 | Dec. 7, 2018 | Speedo Winter Junior Championships - East |
| Ella Nelson | 4:10.84 | March 2, 2018 | Southern Premier Invitational |
| Ella Nelson | 4:11.13 | Dec. 8, 2017 | Speedo Winter Junior Championships - East |
| Ella Nelson | 4:12.91 | Dec. 9, 2016 | Speedo East Winter Junior Nationals |
| Ella Nelson | 4:14.28 | Dec. 11, 2015 | Speedo Winter Junior Championships - East |
| Macie Garrett | 4:18.03 | March 6, 2003 | American Short Course Championships |
