| Time | Date | Name | Meet |
|---|---|---|---|
| 56.63 | Feb. 25, 2022 | Caden Hardy | IHSA Boys State Championship |
| 57.61 | Feb. 19, 2022 | Caden Hardy | IHSA Boys Sectionals - Skokie |
| 58.03 | March 13, 2021 | Caden Hardy | CSL South Conference Championship |
| 58.82 | Feb. 22, 2014 | Maciej Olszewski | 14 Illinois Sectional Championships - Boys - Niles North |
| 59.13 | Feb. 12, 2014 | Maciej Olszewski | 14 Illinois Boys Non-State Best Times |
| 59.18 | Feb. 24, 2012 | Wesley Marberry | 12 Illinois Boys High School State Championships |
| 1:00.94 | Feb. 27, 2009 | Jacob Roth | 09 Illinois Boys State Championships |
| 1:01.99 | Feb. 24, 2006 | Ben McBratney | Illinois State High School Championships |
