| Time | Date | Name | Meet |
|---|---|---|---|
| 55.56 | Feb. 16, 2019 | Paul Kinsella | Virginia Independent School Championship (c) |
| 56.11 | Feb. 3, 2019 | Paul Kinsella | Washington Metropolitan Prep School League Championship |
| 56.32 | Jan. 19, 2019 | Paul Kinsella | National Catholic Swimming & Diving Championship |
| 56.69 | Feb. 17, 2018 | Paul Kinsella | VISAA Championship |
| 57.38 | Jan. 20, 2018 | Paul Kinsella | National Catholic Swimming & Diving Championship |
| 59.15 | Feb. 26, 2011 | Don Tucker | Washington (Md) Metropolitan Interscholastic Championships |
| 1:00.51 | Jan. 29, 2011 | Don Tucker | NATIONAL CATHOLIC H.S. CHAMPIONSHIPS |
| 1:01.13 | Jan. 27, 2007 | BRIAN SCHMITT | NATIONAL CATHOLIC H.S. CHAMPIONSHIPS |
| 1:03.54 | Feb. 23, 2000 | Clint Godfrey | 36TH Annual METROS |
