| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Mironov, Fedor (18)
|
MRSSC |
51.65 |
53.58 |
1.93 |
| 2 |
Ehrhardt, Tristan J (17)
|
MRFA |
58.50 |
56.15 |
-2.35 |
| 3 |
Yatsenko, Vadym (17)
|
MRQNS |
59.14 |
57.45 |
-1.69 |
| 4 |
Chang, Matthew P (15)
|
MRQNS |
58.38 |
58.77 |
0.39 |
| 5 |
Gentilini, Peter J (17)
|
MRFA |
1:00.47 |
1:01.25 |
0.78 |
| 6 |
Zenker, Liam J (15)
|
MRSSC |
1:05.87 |
1:03.91 |
-1.96 |
| 7 |
Ismail, Ahmed N (17)
|
MRQNS |
|
1:04.74 |
- |
| 8 |
Viollis, Logan (16)
|
MRSSC |
1:04.59 |
1:05.05 |
0.46 |
| 9 |
Kozlowski, Kameron C (16)
|
MRFA |
1:06.82 |
1:05.41 |
-1.41 |
| 10 |
Marfoglio, Michael J (16)
|
MRQNS |
|
1:07.87 |
- |
| 11 |
Doherty, Liam D (16)
|
MRFA |
1:11.12 |
1:08.59 |
-2.53 |
| 12 |
Payne, William M (16)
|
MRRA |
1:15.34 |
1:20.27 |
4.93 |