| Time | Date | Name | Meet |
|---|---|---|---|
| 23.27 | Feb. 27, 2021 | Henry Moore | CCIW Cup Wheaton Saturday |
| 23.85 | Feb. 19, 2010 | Michael Firth | College Conference of Illinois & Wisconsin Championships |
| 24.07 | Feb. 20, 2009 | Michael Firth | CCIW Championships |
| 25.23 | Feb. 11, 2005 | Dan Mikkelson | CCIW Championships |
| 26.19 | Feb. 14, 2003 | Andrew Sur | CCIW Swimming Championships |
| 26.99 | Feb. 15, 2002 | Jeff Horvath | CCIW Championships |
