| Time | Date | Name | Meet |
|---|---|---|---|
| 1:38.61 | March 16, 2024 | Danielis Kvederis | CSCAA Time Trials |
| 1:38.72 | Feb. 25, 2011 | Murray Longbotham | - |
| 1:39.29 | Feb. 10, 2010 | John Longbotham | Pacific Collegiate Swim Conference Championships |
| 1:40.32 | March 13, 2008 | Gordon Smith | NCAA Division II Championships |
| 1:40.99 | March 15, 2007 | Gordon Smith | NCAA Division II Championships |
| 1:41.90 | March 9, 2006 | Gordon Smith | NCAA Division II Championships |
