| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Plokhotnichenko, Ernest (12)
|
FGEA |
1:15.49 |
1:11.58 |
-3.91 |
| 2 |
Barreto, Joshua (11)
|
FGOSC |
1:16.43 |
1:11.60 |
-4.83 |
| 3 |
Lesentier, Liam M (11)
|
FGUEA |
1:16.14 |
1:12.01 |
-4.13 |
| 4 |
Franchak, Lucas S (11)
|
FGCANE |
1:15.90 |
1:12.26 |
-3.64 |
| 5 |
Gonzalez, Nicolas (12)
|
FGUNRA |
1:15.52 |
1:16.20 |
0.68 |
| 6 |
Echeverria, Giancarlo * (11)
|
FGMACM |
1:25.12 |
1:18.55 |
-6.57 |
| 7 |
Grenier, Michael * (11)
|
FGCANE |
1:22.84 |
1:19.66 |
-3.18 |
| 8 |
Corona, Alejandro (12)
|
FGASC |
1:25.19 |
1:20.15 |
-5.04 |
| 9 |
Fanjul, Maximo A (12)
|
FGCANE |
1:33.25 |
1:20.64 |
-12.61 |
| 10 |
Alvarez, Robert N (12)
|
FGMACM |
1:27.77 |
1:21.29 |
-6.48 |
| 11 |
Fernandez, Eduardo P (12)
|
FGUNRA |
1:21.72 |
1:21.74 |
0.02 |
| 12 |
Gonzalez, Daniel (12)
|
FGASC |
1:32.28 |
1:22.13 |
-10.15 |
| 13 |
Coronel, Victor A (12)
|
FGMBS |
|
1:26.10 |
- |
| 14 |
Atkatz, Skyler T (11)
|
FGMBS |
|
1:26.58 |
- |
| 15 |
Bachmann, Klaus S (11)
|
FGMBS |
|
1:36.86 |
- |
| 16 |
Aball, Miguel (12)
|
FGASC |
|
1:40.17 |
- |
| 17 |
Blanca, Luis F (11)
|
FGMACM |
1:39.26 |
1:43.50 |
4.24 |
| 18 |
Suarez, Javier (11)
|
FGMACM |
1:44.17 |
1:45.02 |
0.85 |
| 19 |
Fachetti-Carvhalo, Gabriel (12)
|
FGASC |
2:00.01 |
1:47.45 |
-12.56 |
| 20 |
Chuecos, Andres D (11)
|
FGMACM |
|
1:47.74 |
- |
| 21 |
Varona, Gabriel V (11)
|
FGMACM |
|
2:14.94 |
- |
| 22 |
Menendez, Daniel S (11)
|
FGMACM |
|
2:18.73 |
- |
|
Kassin, Roberto J (12)
|
FGMCDA |
|
NS |
- |
|
Sanchez, Manuel (12)
|
FGASC |
|
NS |
- |
|
Verdi, Luca L (11)
|
FGCANE |
|
NS |
- |
|
Tampied, Mateo * (11)
|
FGCANE |
1:27.54 |
NS |
- |