| Time | Date | Name | Meet |
|---|---|---|---|
| 4:19.23 | Nov. 22, 2019 | Gilbert Benton | A3 Performance Invitational |
| 4:24.33 | Feb. 12, 2015 | Samuel Windham | Rocky Mountain Athletic Conference Championships |
| 4:30.18 | Dec. 6, 2013 | Jake Livingston | Colorado Mesa Invitational |
| 4:38.31 | Nov. 10, 2012 | Nick Mankus | Adams State vs. Colorado Mesa |
| 4:41.29 | Oct. 15, 2011 | Nick Mankus | Rocky Mountain Invitational |
