| Time | Date | Name | Meet |
|---|---|---|---|
| 55.94 | Feb. 11, 2017 | Mara Selznick | Northwest Conference Championships |
| 56.26 | Feb. 10, 2017 | Mara Selznick | Northwest Conference Championships |
| 58.00 | Feb. 12, 2016 | Cameo Hlebasko | Northwest Conference Championships |
| 58.71 | Feb. 11, 2012 | Anna Hawkins | Northwest Conference Championships |
| 59.49 | Feb. 10, 2012 | Anna Hawkins | Northwest Conference Championships |
| 59.82 | Feb. 26, 2011 | Anna Hawkins | Northwest Conference Championships |
| 1:00.29 | Feb. 25, 2011 | Anna Hawkins | Northwest Conference Championships |
| 1:01.75 | Feb. 12, 2010 | Charlotte Graham | Northwest Conference Championships |
| 1:03.86 | Jan. 23, 2010 | Charlotte Graham | Whitman vs. Whitworth |
| 1:03.88 | Nov. 21, 2009 | Charlotte Graham | Northwest Invitational |
| 1:11.81 | Nov. 15, 2008 | Becca Young | Pacific Lutheran @Whitman |
| 1:12.65 | Nov. 7, 2008 | Becca Young | Whitman @Linfield |
