| Time | Date | Name | Meet |
|---|---|---|---|
| 25.79 | Oct. 6, 2017 | Sierra Forbord | Intermountain Shootout |
| 26.77 | Oct. 7, 2016 | Eryn Leonard | Intermountain Shootout |
| 27.20 | Oct. 9, 2015 | Eryn Leonard | Intermountain Shootout |
| 27.35 | Oct. 3, 2014 | Eryn Leonard | Intermountain Shootout |
| 27.39 | Oct. 11, 2013 | Eryn Leonard | Intermountain Shootout |
| 27.61 | Nov. 19, 2011 | Stephanie Cook | Colorado Mesa University Invitational |
| 28.11 | Oct. 8, 2010 | Sarah Hagerstrom | Intermountain Shootout |
