| Time | Date | Name | Meet |
|---|---|---|---|
| 47.08 | March 12, 2020 | Kristofer Rogic | CSCAA National Invitational Championship |
| 47.59 | Feb. 28, 2020 | Kristofer Rogic | Western Athletic Conference Championships |
| 47.73 | March 15, 2019 | Kristofer Rogic | CSCAA National Invitational Championship |
| 47.84 | March 1, 2019 | Kristofer Rogic | Western Athletic Conference Championships |
| 48.13 | Feb. 23, 2018 | Kristofer Rogic | Western Athletic Conference Championships |
| 48.77 | Feb. 16, 2012 | Peter Bardessono | Mountain Pacific Sports Federation Championships |
| 48.89 | Feb. 26, 2010 | Luka Leskur | Conference USA Championships |
| 49.54 | Feb. 25, 2010 | Luka Leskur | Conference USA Championships |
| 49.97 | Feb. 27, 2009 | Luka Leskur | Conference USA Championships - Day Three - Finals |
| 50.15 | March 10, 2006 | Seth Dawson | NCAA Division II Championships |
| 51.32 | March 9, 2006 | Karol Zemier | NCAA Division II Championships |
