| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Navarro, Gabriel V (10)
|
FGNMST |
1:26.06 |
1:21.25 |
-4.81 |
| 2 |
Berke, Jared I (10)
|
FGPCS |
1:22.70 |
1:21.62 |
-1.08 |
| 3 |
Cannings, Oliver G (10)
|
FGAJSC |
1:21.96 |
1:21.82 |
-0.14 |
| 4 |
Longo, Kai (10)
|
FGEA |
1:28.39 |
1:23.51 |
-4.88 |
| 5 |
Mazzi, Stefano R (10)
|
FGSOFL |
1:28.06 |
1:23.89 |
-4.17 |
| 6 |
Vallmitjana, Juan (10)
|
FGSOFL |
1:28.24 |
1:27.11 |
-1.13 |
| 7 |
Harries, Ryan T (9)
|
FGSOFL |
1:32.35 |
1:27.23 |
-5.12 |
| 8 |
Aguila, Jorge E (10)
|
FGMWA |
1:30.96 |
1:27.43 |
-3.53 |
| 9 |
Ella, Daniel G (10)
|
FGSUN |
1:31.49 |
1:27.87 |
-3.62 |
| 10 |
Milian, Jason (10)
|
FGBMHG |
1:29.79 |
1:28.49 |
-1.30 |
| 11 |
Jean, Jordan M (10)
|
FGPCS |
1:33.49 |
1:28.95 |
-4.54 |
| 12 |
Vuong, Duy X (9)
|
FGNPB |
1:28.89 |
1:30.36 |
1.47 |
| 13 |
Jimenez, Mason (10)
|
FGSOFL |
1:28.83 |
1:32.24 |
3.41 |
| 14 |
Menacho, Becket (9)
|
FGPOMP |
1:33.97 |
1:33.23 |
-0.74 |
| 15 |
Infante, Alejandro R (10)
|
FGCANE |
1:32.44 |
1:33.79 |
1.35 |
| 16 |
Vincze, Frank (9)
|
FGSF |
1:33.66 |
1:35.13 |
1.47 |
| 17 |
Woodard, Slater A (10)
|
FGJDST |
1:33.52 |
1:35.15 |
1.63 |
|
Viazmetinov, Oleksii (10)
|
FGSOFL |
1:34.15 |
DQ |
- |
|
Linares, Jesus D (10)
|
FGMACM |
1:31.01 |
NS |
- |
|
Spiller, Jonah D (9)
|
FGHAT |
1:33.89 |
NS |
- |
|
Amorim, Gabriel A (10)
|
FGBMSC |
1:24.79 |
NS |
- |