| Time | Date | Name | Meet |
|---|---|---|---|
| 50.72 | Feb. 15, 2024 | Caleb Peimann | Southern Collegiate Athletic Conference Championships |
| 51.66 | Feb. 10, 2023 | Caleb Peimann | Southern Collegiate Athletic Conference Championships |
| 51.82 | Feb. 18, 2022 | Caleb Peimann | Southern Collegiate Athletic Conference Championships |
| 52.09 | Feb. 14, 2014 | Christopher Garrity | Southern Collegiate Athletic Conference Championships |
| 52.45 | Feb. 15, 2013 | Christopher Garrity | Southern Collegiate Athletic Conference Championships |
| 52.63 | Feb. 14, 2013 | Christopher Garrity | Southern Collegiate Athletic Conference Championships |
| 53.10 | Feb. 16, 2012 | Christopher Garrity | Southern Collegiate Athletic Conference Championships |
| 55.01 | Jan. 28, 2011 | Jordan Degayner | Colorado College vs. Mc Murry |
| 56.15 | Feb. 18, 2010 | Jeffrey Nadel | Southern Collegiate Athletic Conference Championships |
| 57.10 | Jan. 13, 2010 | Jordan Degayner | California Lutheran Relays |
| 59.59 | Nov. 7, 2009 | Jeffrey Nadel | Colorado School of Mines vs. Colorado |
