| Name | Time | Date | Meet |
|---|---|---|---|
| Jillian Crooks | 50.09 | March 18, 2022 | 2022 FGC Senior Championships |
| Jillian Crooks | 51.00 | Dec. 11, 2021 | 31st Speedo Winter Championships - Plantation |
| Delaney Biro | 52.67 | Oct. 5, 2019 | – |
| Lalainie Bannister | 53.72 | March 18, 2018 | FG CSSC Junior Olympics |
| Delaney Biro | 54.38 | Jan. 14, 2018 | FL T2 Aquatics Naples Open |
| Matea Smith | 55.43 | Nov. 17, 2017 | FG PST 27th Speedo Winter Championships |
| Lalainie Bannister | 56.64 | Oct. 15, 2017 | FG LLL Mike Horgan Invitational |
| Lalainie Bannister | 56.83 | Nov. 18, 2016 | FG Speedo Winter Championships |
