| Time | Date | Name | Meet |
|---|---|---|---|
| 1:42.26 | Nov. 19, 2025 | Flikkema, Schmidt, Flaherty, Tierney | TYR/CMU Invitational |
| 1:43.04 | Feb. 10, 2023 | Hemp, Schmidt, Osmun, Selig | Rocky Mountain Athletic Conference Championships |
| 1:43.37 | Nov. 16, 2022 | Neuroth, Schmidt, Osmun, Selig | TYR Colorado Mesa Inviational |
| 1:44.73 | Feb. 13, 2019 | Williams, Wong, Oakley, Wood | Rocky Mountain Athletic Conference Championships |
| 1:45.50 | Feb. 8, 2017 | Collier, Burns, Williams, McComas | Rocky Mountain Athletic Conference Championships |
| 1:45.81 | Feb. 10, 2016 | Collier, Wong, Anderson, Holloway | Rocky Mountain Athletic Conference Championships |
| 1:46.11 | Jan. 2, 2009 | Washington @Arizona |
