| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Kolobov, Tikhon (10)
|
FGNMST |
35.27 |
33.58 |
-1.69 |
| 2 |
Kotz-Agramonte, Jake I (10)
|
FGRANS |
34.06 |
34.04 |
-0.02 |
| 3 |
Gerasim, George (9)
|
FGNMST |
34.81 |
34.70 |
-0.11 |
| 4 |
De Angulo, Andres A (10)
|
FGMS |
42.98 |
37.01 |
-5.97 |
| 5 |
Ramos, Thomas M (10)
|
FGSWAT |
|
40.68 |
- |
| 6 |
Sanchez, Samuel (9)
|
FGASC |
44.49 |
41.71 |
-2.78 |
| 7 |
Moreno, Juan E (10)
|
FGEA |
43.76 |
42.21 |
-1.55 |
| 8 |
Estrada, Ian (8)
|
FGNMST |
41.86 |
43.64 |
1.78 |
| 9 |
Macedo, Eric M (8)
|
FGGRSC |
48.01 |
43.76 |
-4.25 |
| 10 |
Fernandez, Sebastian V (10)
|
FGMACM |
46.75 |
44.55 |
-2.20 |
| 11 |
Perez, Lester M (8)
|
FGMACM |
47.93 |
46.47 |
-1.46 |
| 12 |
Rodriguez, Lorenzo E (9)
|
FGMCDA |
47.30 |
47.62 |
0.32 |
| 13 |
Ginart, Kenneth N (10)
|
FGMACM |
|
49.37 |
- |
| 14 |
Porchetto, Dante (10)
|
FGMCDA |
|
49.92 |
- |
| 15 |
Moreira, Joshua (10)
|
FGMCDA |
50.82 |
50.67 |
-0.15 |
| 16 |
Ellis, Jacob J (9)
|
FGRANS |
55.31 |
51.85 |
-3.46 |
| 17 |
Boarato, Gabriel D (10)
|
FGGRSC |
1:04.48 |
52.05 |
-12.43 |
| 18 |
Wilson, Kent M (10)
|
FGMBS |
48.13 |
52.19 |
4.06 |
| 19 |
Valdes, Adley (8)
|
FGASC |
|
52.32 |
- |
| 20 |
Da Silva, Gabriel F (10)
|
FGMACM |
1:01.01 |
52.96 |
-8.05 |
| 21 |
Sanchez, Adrian J (10)
|
FGEA |
1:00.06 |
55.73 |
-4.33 |
| 22 |
Losada Herrera, Lucas (9)
|
FGMACM |
52.32 |
57.73 |
5.41 |
| 23 |
Menendez, Gabriel A (10)
|
FGMACM |
|
1:00.21 |
- |
| 24 |
Duffy, Dillon L (10)
|
FGEA |
|
1:04.20 |
- |
| 25 |
Santos, Mateo S (9)
|
FGAJSC |
|
1:04.77 |
- |
|
Yanes, Matthew M (9)
|
FGMS |
|
DQ |
- |
|
Vera, Diego (9)
|
FGASC |
38.99 |
DQ |
- |
|
Levi, Ely N (10)
|
FGCANE |
55.76 |
DQ |
- |
|
Valdes, Matthias G (10)
|
FGMS |
|
NS |
- |
|
Beker, Elan (9)
|
FGNMST |
33.44 |
NS |
- |
|
Negrin, Axel (10)
|
FGGRSC |
37.35 |
NS |
- |
|
Arias, Lucas M (9)
|
FGCANE |
58.36 |
NS |
- |
|
Scheingoltz, Mateo (10)
|
FGMCDA |
48.29 |
NS |
- |
|
Betancourt, Franco A (9)
|
FGMCDA |
|
NS |
- |