| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Sarno, Gabriel J (10)
|
MRYBAR |
45.09 |
46.79 |
1.70 |
| 2 |
Ticehurst, Lincoln J (9)
|
MRNBS |
53.94 |
52.84 |
-1.10 |
| 3 |
Nitzkorski, Jackson J (9)
|
MRRFAC |
52.14 |
54.37 |
2.23 |
| 4 |
De la Piedra, Maximo A (9)
|
MRNDAC |
55.70 |
57.21 |
1.51 |
| 5 |
McAvinue, Logan D (9)
|
MRYBAR |
58.27 |
58.10 |
-0.17 |
| 6 |
Brice, Malcolm Y (10)
|
MRNDAC |
58.83 |
1:01.40 |
2.57 |
|
Lee, Wilder (10)
|
MRLIE |
1:02.30 |
DQ |
- |
|
Joachim, Carmeleau R (9)
|
MRNBS |
56.51 |
DQ |
- |
|
Rubin, Elijah O (9)
|
MRNDAC |
|
DQ |
- |
|
Town, Theodore L (10)
|
MRNDAC |
|
DQ |
- |
|
Tseng, Elliot Y (10)
|
MRNDAC |
|
DQ |
- |
|
Giametta, Colt E (9)
|
MRVAC |
|
DQ |
- |
|
Alden, Alex W (9)
|
MRNDAC |
1:15.08 |
NS |
- |