| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
O'Sullivan, Oisin (12)
|
MRSSC |
1:15.01 |
1:17.50 |
2.49 |
| 2 |
McHugh, Luke P (12)
|
MRBGNW |
1:17.86 |
1:18.01 |
0.15 |
| 3 |
Laidlaw, John F (12)
|
MRBGNW |
1:17.48 |
1:19.32 |
1.84 |
| 4 |
Falbaum, Noah A (12)
|
MRBGNW |
1:19.00 |
1:22.47 |
3.47 |
| 5 |
D'Amelia, Peter (12)
|
MRRFAC |
1:19.87 |
1:22.49 |
2.62 |
| 6 |
Smith, Sebastian L (11)
|
MRRFAC |
1:19.46 |
1:23.52 |
4.06 |
| 7 |
Lichtenthal, Jonah G (12)
|
MRSMC |
1:20.67 |
1:24.50 |
3.83 |
| 8 |
Morgan, Tom (11)
|
MRSMC |
1:25.75 |
1:30.62 |
4.87 |
| 9 |
Weitzen, Zach (12)
|
MRSMC |
1:24.79 |
1:32.42 |
7.63 |
| 10 |
Xu, Daniel (12)
|
MRRA |
1:30.52 |
1:33.03 |
2.51 |
| 11 |
Pastore, James V (11)
|
MRCFB |
1:27.14 |
1:34.47 |
7.33 |
| 12 |
Dickman, Kellen (11)
|
MRVAC |
1:36.25 |
1:35.91 |
-0.34 |
| 13 |
Yae, James M (11)
|
NJWAVE |
1:35.48 |
1:36.91 |
1.43 |
| 14 |
Roychoudhury, Devayan (11)
|
MRYMID |
1:26.02 |
1:37.10 |
11.08 |
| 15 |
Macaluso, Steven M (12)
|
MRRA |
1:35.74 |
1:39.67 |
3.93 |
| 16 |
Hu, Dylan H (11)
|
MRYFD |
1:31.99 |
1:39.97 |
7.98 |
| 17 |
O'Rourke, Shane (12)
|
MRSSC |
1:31.85 |
1:41.78 |
9.93 |
| 18 |
Tse, Alan (12)
|
NJWAVE |
1:20.56 |
1:45.39 |
24.83 |
| 19 |
Sellami, Max L (11)
|
MRYFD |
1:40.67 |
1:48.46 |
7.79 |
|
Hally, Seamus (11)
|
MRNDAC |
1:36.18 |
DQ |
- |
|
Staubi, Eli J (12)
|
MRNDAC |
1:19.75 |
NS |
- |