| Time | Date | Name | Meet |
|---|---|---|---|
| 1:38.78 | Nov. 17, 2021 | Garrett Waite | A3 Performance Colorado Mesa University Invite |
| 1:38.89 | Feb. 20, 2014 | Zackry Gertig | Rocky Mountain Athletic Conference Championships |
| 1:38.97 | Feb. 15, 2013 | Zackry Gertig | Rocky Mountain Athletic Conference Championships |
| 1:40.71 | March 10, 2011 | Andrew Zerwick | NCAA Division II Championships |
| 1:44.57 | Feb. 11, 2011 | Jesse Miller | Rocky Mountain Athletic Conference Championships |
| 1:44.62 | Dec. 5, 2010 | Andrew Zerwick | Mesa State Invitational |
| 1:44.99 | Feb. 12, 2010 | Jacob Dole | Rocky Mountain Athletic Conference Championship |
| 1:45.00 | Nov. 21, 2009 | Kevin Wood | Washington University Invitational |
| 1:47.96 | Nov. 7, 2009 | Kevin Wood | Colorado School of Mines vs. Colorado |
| 1:49.15 | Oct. 16, 2009 | Kevin Wood | Rocky Mtn Invite |
