| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Gomes, Lucas (16)
|
NJMDY |
47.58 |
49.50 |
1.92 |
| 2 |
Brown, Henry (16)
|
NJWY |
49.16 |
50.50 |
1.34 |
| 3 |
Chen, Matthew F (17)
|
NJWY |
50.52 |
53.87 |
3.35 |
| 4 |
Sharkey, Carsen (15)
|
NJWY |
56.59 |
55.00 |
-1.59 |
| 5 |
Czarrunchick, Marcus (16)
|
NJMEY |
52.12 |
56.29 |
4.17 |
| 6 |
Kim, Robbin A (15)
|
NJMDY |
53.92 |
56.55 |
2.63 |
| 7 |
Kaplan, Bram (17)
|
NJMEY |
56.78 |
56.66 |
-0.12 |
| 8 |
McGoldrick, Michael J (18)
|
NJWY |
57.43 |
57.18 |
-0.25 |
| 9 |
Rameshkumar, Abhishek (16)
|
NJMDY |
56.68 |
57.40 |
0.72 |
| 10 |
Hwang, Junsoo J (16)
|
NJMDY |
55.97 |
57.88 |
1.91 |
| 11 |
Sulistyono, Ryan (17)
|
NJMEY |
58.17 |
58.48 |
0.31 |
| 12 |
Contract, Adam R (15)
|
NJWY |
1:00.24 |
59.00 |
-1.24 |
| 13 |
Lau, Andrew (16)
|
NJMEY |
57.01 |
1:02.14 |
5.13 |
| 14 |
Dailey, Aidan (17)
|
NJWY |
1:03.98 |
1:02.25 |
-1.73 |
| 15 |
Stiles, Brendan E (16)
|
NJWY |
59.73 |
1:03.42 |
3.69 |
| 16 |
Slevin, Colm (17)
|
NJWY |
1:02.88 |
1:04.57 |
1.69 |
| 17 |
Bronico, Matthew J (15)
|
NJMDY |
1:14.12 |
1:08.67 |
-5.45 |