| Time | Date | Name | Meet |
|---|---|---|---|
| 4:30.72 | Feb. 15, 2013 | Michael Brus | Midwest Conference Championships |
| 4:31.31 | Feb. 17, 2012 | Michael Brus | Midwest Conference Championships |
| 4:43.63 | Jan. 20, 2012 | Michael Brus | Grinnell Invitational |
| 4:45.30 | Jan. 21, 2011 | Michael Brus | Grinnell Invitational |
| 4:55.47 | Feb. 13, 2009 | Paul Gagne | Midwest Conference Championships - Day One - Finals |
| 5:01.40 | Jan. 15, 2009 | Ross Noecker | Grinnell Invitational |
| 5:09.47 | Dec. 6, 2008 | Nate Wittnam | Falcon Invite |
