| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Qu, Sirui (12)
|
MRFLY |
1:07.22 |
1:06.24 |
-0.98 |
| 2 |
Marrero, Milo M (12)
|
MRHYB |
1:08.07 |
1:08.32 |
0.25 |
| 3 |
Lyashchenko, Serge S (12)
|
MRLGAC |
1:08.51 |
1:12.44 |
3.93 |
| 4 |
O'Sullivan, Tiarnan M (12)
|
MRLGAC |
1:12.16 |
1:13.98 |
1.82 |
| 5 |
Perr, Ryan J (11)
|
MRLGAC |
1:17.19 |
1:18.30 |
1.11 |
| 6 |
Ortiz, Anthony (12)
|
MRRED |
1:28.09 |
1:24.11 |
-3.98 |
| 7 |
Chen, Samuel (11)
|
MRLGAC |
1:31.27 |
1:25.13 |
-6.14 |
| 8 |
Tjan, Jaden L (11)
|
MRLGAC |
1:25.97 |
1:26.42 |
0.45 |
| 9 |
Aouchiche, Adam S (11)
|
MRFLY |
|
1:27.56 |
- |
| 10 |
Chen, Aidan (12)
|
MRRED |
1:30.09 |
1:31.98 |
1.89 |
| 11 |
Dansker, Tyler L (12)
|
MRCIY |
1:35.00 |
1:33.11 |
-1.89 |
|
Mei, Jayden (11)
|
MRFLY |
|
NS |
- |