| Time | Date | Name | Meet |
|---|---|---|---|
| 51.81 | Feb. 19, 2021 | Josue Dominguez | MPSF Championships |
| 52.79 | Jan. 15, 2021 | Josue Dominguez | Denver vs. BYU |
| 52.90 | Nov. 21, 2019 | Josue Dominguez | Mizzou Invitational |
| 53.55 | Feb. 22, 2019 | Josue Dominguez | Mountain Pacific Sports Federation Championships |
| 53.85 | Nov. 16, 2018 | Levi Jensen | Missouri Invitational |
| 53.88 | Feb. 16, 2018 | Levi Jensen | Mountain Pacific Sports Federation Championships |
| 54.15 | Feb. 20, 2015 | Levi Jensen | Mountain Pacific Sports Federation Championships |
| 54.40 | Feb. 25, 2011 | Vytenis Slenys | Mountain West Conference Championships |
| 55.33 | Feb. 28, 2009 | Vytenis Slenys | Mountain West Conference Championships - Day Four - Finals |
| 58.32 | Oct. 30, 2008 | Vytenis Slenys | Brigham Young @Texas Christian |
