| Name | Time | Date | Meet |
|---|---|---|---|
| Addisyn Hoven | 30.12 | June 18, 2022 | SD ASC Aberdeen Summer High P |
| Gena Jorgenson | 31.36 | July 27, 2019 | South Dakota Long Course Championships |
| Molly Hogg | 32.00 | Dec. 14, 2014 | 2014 USA Swimming Junior Time Trials |
| Hannah Kastigar | 32.28 | Aug. 3, 2013 | NCSA Junior National Championships |
| Emily Campbell | 36.72 | July 23, 2009 | Speedo Champions Series - Minneapolis |
| Emily Campbell | 36.85 | July 21, 2006 | Speedo Champions Series - Minneapolis |
