| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Gonzalez, Logan G (12)
|
FGSOFL |
35.42 |
35.37 |
-0.05 |
| 2 |
Touya, Fabrice (12)
|
FGFFSC |
38.35 |
38.55 |
0.20 |
| 3 |
Burnham Ugalde, Hector X (12)
|
FGMBS |
38.95 |
39.32 |
0.37 |
| 4 |
Pagan, Maximus A (11)
|
FGDRSC |
40.85 |
39.43 |
-1.42 |
| 5 |
Reta, Ethan R (12)
|
FGMBS |
39.78 |
39.73 |
-0.05 |
| 6 |
Calvo, Jaime J (11)
|
FGDRSC |
41.03 |
42.28 |
1.25 |
| 7 |
Palacios, Gianmarco * (12)
|
FGMACM |
43.71 |
44.89 |
1.18 |
| 8 |
Amer, Yassin M (11)
|
FGFFSC |
41.44 |
46.14 |
4.70 |
| 9 |
Lara, Christian N (11)
|
FGDRSC |
51.24 |
47.72 |
-3.52 |
| 10 |
Nazario-Vazquez, Diego A (11)
|
FGSOFL |
49.60 |
48.74 |
-0.86 |
| 11 |
Wilson, Evan (11)
|
FGMCDA |
|
49.35 |
- |
| 12 |
Mendieta, Matthew J (12)
|
FGSOFL |
50.86 |
50.78 |
-0.08 |
| 13 |
Mansur, Marcelo (11)
|
FGMACM |
54.93 |
51.17 |
-3.76 |
| 14 |
Grenier, David * (11)
|
FGCANE |
|
59.22 |
- |
| 15 |
Salguero, Maximiliano (12)
|
FGSOFL |
|
1:03.89 |
- |
| 16 |
Singh, Jashan (11)
|
FGMCDA |
|
1:06.38 |
- |
|
Berman, Caleb M (12)
|
FGMCDA |
50.55 |
DQ |
- |