| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Maier, William G (8)
|
PVMAKO |
|
40.19 |
- |
| 2 |
Donnelly, Brennan P (8)
|
PVMAKO |
44.44 |
44.34 |
-0.10 |
| 3 |
Devlin, Jonathan M (8)
|
PVMAKO |
47.68 |
46.70 |
-0.98 |
| 4 |
Bello, Bruce A (8)
|
PVSDS |
46.68 |
47.79 |
1.11 |
| 5 |
Duarte, Sebastian D (8)
|
PVPM |
58.19 |
50.26 |
-7.93 |
| 6 |
Somov, Maxim Y (8)
|
PVSDS |
52.60 |
50.80 |
-1.80 |
| 7 |
Salzer, Henry M (8)
|
PVSDS |
|
59.08 |
- |
| 8 |
Garin, Julian M (8)
|
PVSDS |
|
1:01.73 |
- |
| 9 |
Vasquez, Luke R (7)
|
PVSDS |
|
1:03.06 |
- |
|
Yang, Dylan Y (8)
|
PVMAKO |
51.58 |
DQ |
- |
|
Flook, William F (8)
|
PVMAKO |
55.58 |
NS |
- |
|
Egerton-Vernon, Kai J (7)
|
PVSDS |
|
NS |
- |