| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Fernandez, Eliseo D (12)
|
MRMHHW |
32.39 |
30.34 |
-2.05 |
| 2 |
Speare, Troy D (11)
|
MRNDAC |
31.23 |
31.60 |
0.37 |
| 3 |
Tuttle, Peyton J (12)
|
MRNBS |
35.08 |
33.07 |
-2.01 |
| 4 |
Olsson, Kian J (11)
|
MRNDAC |
31.93 |
33.48 |
1.55 |
| 5 |
Karadeniz, Derin M (11)
|
MRRFAC |
35.95 |
35.04 |
-0.91 |
| 6 |
Roche, James (12)
|
MRRA |
34.92 |
35.11 |
0.19 |
| 7 |
Cooper, Jackson C (12)
|
MRNBS |
38.02 |
36.08 |
-1.94 |
| 8 |
De Borba Silva, Lucas C (12)
|
MRRA |
57.42 |
36.53 |
-20.89 |
| 9 |
Ruiz, Nathaniel R (12)
|
MRHVD |
|
37.01 |
- |
| 10 |
Mummery, John F (12)
|
MRNBS |
36.90 |
38.20 |
1.30 |
| 11 |
Burgarelli, Sebastian (12)
|
MRNBS |
37.81 |
39.04 |
1.23 |
| 12 |
Dorner, Benjamin R (12)
|
MRNDAC |
41.04 |
41.28 |
0.24 |
| 13 |
Ramirez, Bryan E (12)
|
MRMHHW |
46.31 |
41.54 |
-4.77 |
| 14 |
Kyaw, Thit-sar (12)
|
MRHVD |
48.97 |
42.07 |
-6.90 |
| 15 |
Chung, Nathaniel P (11)
|
MRRA |
45.71 |
45.93 |
0.22 |
| 16 |
Racz, Gregory L (12)
|
MRRA |
47.90 |
47.61 |
-0.29 |
| 17 |
Villalobos, Anthony (12)
|
MRMHHW |
48.35 |
49.11 |
0.76 |
| 18 |
Quezada, Louis A (12)
|
MRRA |
49.38 |
49.45 |
0.07 |
| 19 |
Chamberlain, Nicholas J (11)
|
MRRFAC |
51.82 |
54.50 |
2.68 |
| 20 |
Constancio, Markus A (12)
|
MRNBS |
52.56 |
54.83 |
2.27 |
| 21 |
Otis, Joshua A (11)
|
MRNDAC |
50.00 |
55.35 |
5.35 |
|
Baxter, Liam M (11)
|
MRNBS |
1:08.59 |
DQ |
- |
|
Payne, William M (12)
|
MRRA |
45.13 |
NS |
- |