| Name | Time | Date | Meet |
|---|---|---|---|
| Jillian Crooks | 55.06 | March 19, 2022 | 2022 FGC Senior Championships |
| Jillian Crooks | 56.21 | Dec. 10, 2021 | 31st Speedo Winter Championships - Plantation |
| Sophia El Chantiry | 57.76 | Oct. 8, 2023 | FG LLL Mike Horgan Memorial Invitational |
| Samantha Litman | 1:04.08 | Feb. 12, 2017 | FG CSSC Open Invite |
| Samantha Litman | 1:05.79 | Nov. 19, 2016 | FG Speedo Winter Championships |
