| Time | Date | Name | Meet |
|---|---|---|---|
| 48.92 | March 6, 2020 | Kyle Floyd | - |
| 49.27 | Feb. 18, 2011 | James Crabb | Virginia Independent School Championship (c) |
| 50.74 | Feb. 26, 2010 | James Crabb | 110th Eastern Interscholastic Swimming Championships |
| 51.06 | Feb. 20, 2009 | James Crabb | 109th Eastern Interscholastic Swimming Championships |
| 51.86 | Feb. 13, 2009 | James Crabb | Virginia Independent Schools Championship (c) |
