| Time | Date | Name | Meet |
|---|---|---|---|
| 52.09 | Feb. 10, 2023 | Julia Thomas | CHSAA Girls 3A State Championship |
| 52.32 | Feb. 11, 2022 | Julia Thomas | CHSAA Girls 3A State Championship |
| 55.68 | March 16, 2021 | Eden Nolan | CHSSA Girls 3A State Championships |
| 56.81 | Feb. 10, 2012 | Stephanie Gutierrez | 12 Colorado Girls State 4A Championships |
| 1:01.39 | Feb. 12, 2010 | Kelsey Oettinger | Colorado 4A Girls State Championships |
