| Time | Date | Name | Meet |
|---|---|---|---|
| 4:19.39 | Feb. 24, 2012 | Reed Malone | 12 Illinois Boys High School State Championships |
| 4:28.90 | March 1, 2011 | CJ Smith | 11 Illinois Boys High School Best Times |
| 4:31.17 | Feb. 26, 2010 | CJ Smith | Illinois Boys High School Championships |
| 4:32.06 | Feb. 27, 2009 | Nick Killeen | 09 Illinois Boys State Championships |
| 4:42.10 | Feb. 27, 2004 | Erik Bordwell | IHSA Boys State Championships |
