| Time | Date | Name | Meet |
|---|---|---|---|
| 50.35 | Feb. 12, 2016 | Michael Streyle | Liberal Arts Championships |
| 51.79 | Feb. 11, 2016 | Michael Streyle | Liberal Arts Championships |
| 52.05 | Dec. 5, 2015 | Michael Streyle | Rochester Invitational |
| 52.18 | Feb. 18, 2010 | Spencer Robbins | Liberal Arts Championships |
| 53.42 | Dec. 4, 2009 | Spencer Robbins | UW-River Falls Falcon Invite - Red Division |
| 53.71 | March 20, 2008 | Cameron Webb | NCAA Division III Mens Championship |
