| Time | Date | Name | Meet |
|---|---|---|---|
| 54.47 | Dec. 1, 2023 | Dorian Bachlaj | Wooster Invitational |
| 55.21 | March 3, 2023 | Leon Irmer | NAIA National Championships |
| 55.52 | March 3, 2017 | Jacob Smith | NAIA Championships |
| 56.40 | March 1, 2013 | Samuel Huntley | NAIA Championships |
| 57.34 | March 5, 2010 | Matt Moon | NAIA National Championships |
| 58.24 | Nov. 21, 2009 | Matt Moon | Hilltopper Invitational |
| 1:01.38 | Oct. 17, 2009 | Matt Moon | Kentucky vs. Arkansas, Cumberland, Southern Illinois |
