| Time | Date | Name | Meet |
|---|---|---|---|
| 54.74 | Feb. 16, 2018 | Sam Knott | Rocky Mountain Athletic Conference Championships |
| 55.29 | Feb. 15, 2013 | Matthew Bisping | Rocky Mountain Athletic Conference Championships |
| 56.07 | Feb. 17, 2012 | Matthew Bisping | Rocky Mountain Athletic Conference Championships |
| 56.79 | Dec. 4, 2010 | Matthew Bisping | Mesa State Invitational |
| 57.32 | Feb. 12, 2010 | Matthew Bisping | Rocky Mountain Athletic Conference Championship |
| 57.65 | Nov. 21, 2009 | Matthew Bisping | Washington University Invitational |
| 59.72 | March 13, 2009 | Kevin Shaw | NCAA DII Men's & Women's Championships |
| 1:01.35 | Jan. 2, 2009 | Sergey Piletski | Washington @Arizona |
