| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Winkler, Kaii L (12)
|
FGEA |
1:18.29 |
1:13.03 |
-5.26 |
| 2 |
Kauefate, Jorge (11)
|
FGSDST |
1:28.03 |
1:28.42 |
0.39 |
| 3 |
Plokhotnichenko, Ernest (11)
|
FGEA |
1:30.06 |
1:28.51 |
-1.55 |
| 4 |
Roca, Peter M (11)
|
FGEA |
1:26.22 |
1:31.15 |
4.93 |
| 5 |
Esser, Erick (11)
|
FGSOFL |
1:34.61 |
1:31.84 |
-2.77 |
| 6 |
Arias, Adrian (11)
|
FGASC |
1:38.95 |
1:34.93 |
-4.02 |
| 7 |
Quintana, Jaime (12)
|
FGSOFL |
|
1:36.64 |
- |
| 8 |
Morel, Julien (11)
|
FGUN |
|
1:38.94 |
- |
| 9 |
Gonzalez, Santiago A (12)
|
FGCM |
1:43.75 |
1:40.62 |
-3.13 |
| 10 |
Juodzevicius, Joel (11)
|
FGCM |
|
1:46.80 |
- |
| 11 |
Fachetti-Carvhalo, Gabriel (11)
|
FGASC |
|
1:53.23 |
- |
| 12 |
Perdigon, Julien A (12)
|
FGSOFL |
|
2:10.71 |
- |
|
Salazar, Emiliano (11)
|
FGMACM |
|
DQ |
- |