| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Stachelberg, Oscar (10)
|
MRMAKO |
49.04 |
46.98 |
-2.06 |
| 1 |
Munoz- Solano, John A (10)
|
MRRED |
50.17 |
48.92 |
-1.25 |
| 2 |
Sanchez, Ronald (10)
|
MRRED |
53.50 |
48.95 |
-4.55 |
| 3 |
Wang, Robert Y (9)
|
MRAPEX |
51.83 |
49.55 |
-2.28 |
| 4 |
Guzman, Michael A (10)
|
MRRED |
50.50 |
49.74 |
-0.76 |
| 5 |
Diaz, Adam C (9)
|
MRRED |
49.69 |
49.90 |
0.21 |
| 6 |
Szymczak, Eric (9)
|
MRLGAC |
52.63 |
50.60 |
-2.03 |
| 7 |
Yi, Ethan (9)
|
MRMAKO |
54.07 |
52.49 |
-1.58 |
| 8 |
Pelea, Aidan (10)
|
MRLGAC |
53.00 |
53.31 |
0.31 |
| 9 |
MacDonald, Kaan (9)
|
MRMAKO |
1:04.99 |
54.58 |
-10.41 |
| 10 |
Sucher, Mattias (9)
|
MRMAKO |
55.70 |
55.03 |
-0.67 |
| 11 |
Decasseres, Elijah (9)
|
MRKBM |
59.12 |
55.82 |
-3.30 |
| 12 |
Deguzman, Anthony William A (10)
|
MRHES |
54.99 |
55.96 |
0.97 |
| 13 |
Blum, Hawke (9)
|
MRMAKO |
1:01.48 |
56.93 |
-4.55 |
| 14 |
Mina, Victor S (10)
|
MRRED |
54.72 |
57.68 |
2.96 |
| 15 |
Karinsky, Parker (9)
|
MRHES |
1:05.41 |
58.41 |
-7.00 |
| 16 |
Leonard, Kiel J (9)
|
MRAPEX |
1:06.17 |
1:05.43 |
-0.74 |
|
Castanos, Kemri (10)
|
MRAPEX |
1:00.10 |
DQ |
- |
|
Nieves, Jayden A (10)
|
MRCAS |
52.75 |
DQ |
- |