| Time | Date | Name | Meet |
|---|---|---|---|
| 1:31.72 | Feb. 16, 2023 | Morse, Turken, Snow, Feltzer | Missouri Valley Conference Championships |
| 1:33.71 | Nov. 16, 2022 | Morse, Turken, Snow, Gonder | Purdue Invitational |
| 1:33.77 | Dec. 5, 2014 | Yontz, Schuckles, Nash, Nelson | Zippy Invitational |
| 1:33.80 | Feb. 14, 2013 | Yontz, Nelson, Nolte, Halley | Missouri Valley Conference Championships |
| 1:34.97 | Feb. 17, 2011 | Nolte, McGee, Halley, Schaefer | Missouri Valley Conference Championships |
| 1:35.97 | Feb. 11, 2010 | Nolte, Terzis, McGee, Schaefer | Missouri Valley Conference Championships |
| 1:36.38 | Feb. 12, 2009 | Missouri Valley Conference Championships - Day One - Finals | |
| 1:44.55 | Jan. 3, 2009 | Florida Atlantic Invitational |
