| Time | Date | Name | Meet |
|---|---|---|---|
| 45.83 | Feb. 18, 2022 | Adam Sandid | KSHSAA Boys 5-1A State Championships |
| 46.73 | Feb. 20, 2021 | Adam Sandid | Kansas Boys 5-1A State Championships |
| 48.36 | Feb. 21, 2020 | Adam Sandid | Kansas Boys 5-1A State Championship |
| 49.70 | Feb. 14, 2013 | Rhys Powell | Kansas Boys 1-6A High School Championships |
