| Name | Time | Date | Meet |
|---|---|---|---|
| Kelly Loftus | 56.87 | Feb. 15, 2013 | 2013 College Conference of Illinois & Wisconsin Championships |
| Michelle Pelka | 57.45 | Feb. 18, 2011 | College Conference of Illinois & Wisconsin Championships |
| Michelle Pelka | 59.40 | Dec. 4, 2010 | TYR / CollegeSwimming.com Classic |
| Carolyn Kelly | 59.53 | Feb. 11, 2005 | 2005 CCIW Championships |
| Janet Hughes | 1:02.40 | Feb. 14, 2003 | CCIW Swimming Championships |
| Janet Hughes | 1:03.23 | Feb. 15, 2002 | 2002 CCIW Championships |
