| Time | Date | Name | Meet |
|---|---|---|---|
| 52.31 | May 19, 2023 | Presley Baber | KSHSAA Girls 5-1A State Championships |
| 52.71 | May 20, 2022 | Presley Baber | KSHSAA Girls 5-1A State Championships |
| 53.22 | May 22, 2021 | Presley Baber | Kansas Girls 5-1A State Championships |
| 53.75 | May 22, 2015 | Maddie Carrigan | Kansas Girls 1-5A High School Championships |
| 54.47 | May 19, 2012 | Megan Becker | 12 Kansas Girls 6A Championships |
| 55.55 | May 19, 2011 | Megan Becker | Kansas Girls 1-6A High School Championships |
