| Time | Date | Name | Meet |
|---|---|---|---|
| 44.75 | March 4, 2022 | Leon MacAlister | Pacific 12 Championships (M) |
| 44.78 | March 27, 2015 | Dave Nolan | NCAA Division I Mens Championships |
| 44.93 | March 26, 2010 | Eugene Godsoe | NCAA Division I Mens Championships |
| 45.49 | Oct. 17, 2008 | Eugene Godsoe | Pacific Invitational |
| 46.05 | March 2, 2005 | Jayme Cramer | Men's Pac-10 Championsihps |
