| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Calvo, Jaime J (11)
|
FGDRSC |
33.77 |
34.07 |
0.30 |
| 2 |
Baltodano, Michael A (11)
|
FGMBS |
33.91 |
34.12 |
0.21 |
| 3 |
Palacios, Gianmarco * (12)
|
FGMACM |
36.46 |
35.67 |
-0.79 |
| 4 |
Lara, Christian N (11)
|
FGDRSC |
39.16 |
37.22 |
-1.94 |
| 5 |
Mansur, Marcelo (11)
|
FGMACM |
40.03 |
38.01 |
-2.02 |
| 6 |
Chichoni, Zachary L (12)
|
FGFFSC |
40.98 |
38.11 |
-2.87 |
| 7 |
Pagan, Maximus A (11)
|
FGDRSC |
40.78 |
38.22 |
-2.56 |
| 8 |
Solorzano, Mario A (12)
|
FGCANE |
41.29 |
38.52 |
-2.77 |
| 9 |
Nazario-Vazquez, Diego A (11)
|
FGSOFL |
40.96 |
38.78 |
-2.18 |
| 10 |
Weisson, Matthew (12)
|
FGFFSC |
|
38.96 |
- |
| 11 |
Bonilla, Andres E (12)
|
FGMSA |
41.60 |
39.92 |
-1.68 |
| 12 |
El Sheha, Ryan (12)
|
FGCANE |
45.57 |
40.40 |
-5.17 |
| 13 |
Ferrari, Anthony G (11)
|
FGMBS |
55.07 |
48.15 |
-6.92 |
| 14 |
Esteban, Lucas (11)
|
FGCANE |
58.02 |
48.73 |
-9.29 |
| 15 |
Berman, Caleb M (12)
|
FGMCDA |
1:07.04 |
49.00 |
-18.04 |
| 16 |
Florin, Harry W (11)
|
FGMCDA |
57.69 |
51.30 |
-6.39 |
| 17 |
Gonzalez, Anthony (11)
|
FGMACM |
|
57.09 |
- |
|
Fermin, Tomas E (11)
|
FGMBS |
40.63 |
NS |
- |