| Name | Time | Date | Meet |
|---|---|---|---|
| Madisyn Cox | 4:36.61 | May 20, 2021 | ST TXLA Longhorn Elite |
| Madisyn Cox | 4:37.94 | March 2, 2018 | TYR Pro Swim Series - Atlanta |
| Kirsty Coventry | 4:37.70 | Feb. 16, 2008 | Missouri Grand Prix |
| Alisa Schuknecht | 4:52.12 | Aug. 3, 2004 | 2004 ConocoPhillips National Championships |
| Rachel Harris | 4:59.94 | June 8, 2001 | Texas Senior Circuit #2 |
| Lindsay Voyles | 5:16.86 | June 2, 2000 | Texas Senior Circuit #2 |
