| Time | Date | Name | Meet |
|---|---|---|---|
| 1:28.31 | Feb. 28, 2024 | Kvederis, Gonzales, Thomure, Imig | Western Athletic Conference Championships |
| 1:29.27 | Feb. 22, 2017 | Montemayor, Schelling, Baldoni, Raper | Western Athletic Conference Championships |
| 1:29.78 | Feb. 24, 2016 | Montemayor, Schelling, Baldoni, Morris | Western Athletic Conference Championships |
| 1:30.25 | Feb. 25, 2015 | Montemayor, Schelling, Baldoni, Wanot | Western Athletic Conference Championships |
| 1:30.58 | Feb. 23, 2011 | Andrews, Warren, Anderson, Tibbals | Mountain Pacific Sports Federation Championships |
| 1:31.88 | March 12, 2008 | Chiu, Djang, Coley, Bevers | NCAA Division II Championships |
| 1:33.56 | March 14, 2007 | Chiu, Djang, Coley, Bevers | NCAA Division II Championships |
| 1:34.43 | March 8, 2006 | Bemis, Oram, Coley, Shelton | NCAA Division II Championships |
