| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Uriarte Moreira, Frederico (16)
|
PVDCPR |
55.86 |
57.02 |
1.16 |
| 2 |
Sparshott, Joseph D (17)
|
PVDCPR |
1:00.49 |
57.93 |
-2.56 |
| 3 |
Wallace, Nathaniel J (16)
|
PVDCPR |
1:00.73 |
58.99 |
-1.74 |
| 4 |
Theodore, Darius J (18)
|
PVFAST |
59.39 |
1:00.50 |
1.11 |
| 5 |
Son, Alistair K (17)
|
PVMSSC |
1:06.47 |
1:06.00 |
-0.47 |
| 6 |
Sadqi, Jed S (17)
|
PVDCPR |
1:09.17 |
1:06.78 |
-2.39 |
| 7 |
Middlebusher, Dillon J (17)
|
PVFAST |
1:06.89 |
1:06.91 |
0.02 |
| 8 |
Gorham, Nathaniel J (16)
|
PVDCPR |
1:16.00 |
1:07.30 |
-8.70 |
|
Egan, James A (17)
|
PVDCPR |
1:02.39 |
NS |
- |
|
Miller, James W (16)
|
PVFAST |
|
NS |
- |