| Time | Date | Name | Meet |
|---|---|---|---|
| 54.20 | March 23, 2018 | Sam Mcmanus | NCAA Division III Championships |
| 54.31 | Nov. 18, 2017 | Sam Mcmanus | Phoenix Fall Classic |
| 54.94 | March 17, 2017 | Sam Mcmanus | NCAA Division III Championships |
| 55.39 | Dec. 4, 2015 | Mitchell Davis | Total Performance Invitational |
| 56.09 | March 22, 2013 | Matt Kukurugya | NCAA Division III Championships |
| 56.29 | March 25, 2011 | Matt Kukurugya | NCAA Division III Championships |
| 56.51 | Feb. 18, 2011 | Matt Kukurugya | Southern Collegiate Athletic Conference Championships |
| 57.61 | Feb. 19, 2010 | Matt Kukurugya | Southern Collegiate Athletic Conference Championships |
| 58.05 | Dec. 4, 2009 | Matt Kukurugya | DePauw Invitational |
| 58.19 | March 20, 2009 | Joshua Baugh | NCAA Division III Championships |
| 58.29 | March 1, 2009 | Dan DeGeus | Boiler-Make-It Invitational |
| 1:01.17 | Nov. 12, 2008 | Dan DeGeus | De Pauw @Wabash |
| 1:02.42 | Nov. 18, 2006 | Dan DeGeus | Wabash Invitational |
