| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Tadiello, Sean P (17)
|
NJJFAC |
54.10 |
53.27 |
-0.83 |
| 1 |
Abfier, Hayden Z (15)
|
NJCAT |
56.49 |
56.74 |
0.25 |
| 2 |
James, Charlie B (17)
|
NJCBGC |
53.96 |
54.24 |
0.28 |
| 2 |
Sabeur, Yunes (15)
|
NJJFAC |
59.46 |
57.64 |
-1.82 |
| 3 |
McIntosh, Hiroshi N (16)
|
NJJFAC |
54.82 |
54.44 |
-0.38 |
| 3 |
Wolfe, Alexander (16)
|
NJCBGC |
58.76 |
57.66 |
-1.10 |
| 4 |
Del Rosario, Aidan Jacob D (16)
|
NJJFAC |
54.43 |
54.45 |
0.02 |
| 4 |
Villa, Anthony J (17)
|
NJJCB |
59.01 |
58.63 |
-0.38 |
| 5 |
Ortiz, Juan M (16)
|
NJEAG |
58.71 |
58.99 |
0.28 |
| 6 |
Krstevski, Daniel (16)
|
NJJFAC |
1:00.41 |
59.80 |
-0.61 |
| 7 |
Salas Makawalang, Aidan P (16)
|
NJJCB |
1:04.85 |
1:02.54 |
-2.31 |
| 8 |
Assouab, Mohamed (17)
|
NJJCB |
1:04.53 |
1:07.92 |
3.39 |
| 9 |
Rivera, Jakob L (15)
|
NJCBGC |
1:05.58 |
1:09.45 |
3.87 |