| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Gonzalez, Nicolas (12)
|
FGUNRA |
1:07.71 |
1:05.08 |
-2.63 |
| 2 |
Franchak, Lucas S (11)
|
FGCANE |
1:07.31 |
1:06.03 |
-1.28 |
| 3 |
Corona, Alejandro (12)
|
FGASC |
1:09.61 |
1:07.60 |
-2.01 |
| 4 |
Coronel, Victor A (12)
|
FGMBS |
1:13.75 |
1:09.98 |
-3.77 |
| 5 |
Fanjul, Maximo A (12)
|
FGCANE |
1:13.04 |
1:10.04 |
-3.00 |
| 6 |
Grenier, Michael * (11)
|
FGCANE |
1:12.64 |
1:10.24 |
-2.40 |
| 7 |
Puig, Gabriel (12)
|
FGMACM |
1:33.24 |
1:12.37 |
-20.87 |
| 8 |
Echeverria, Giancarlo * (11)
|
FGMACM |
1:17.36 |
1:13.58 |
-3.78 |
| 9 |
Atkatz, Skyler T (11)
|
FGMBS |
1:19.67 |
1:15.42 |
-4.25 |
| 10 |
Alvarez, Robert N (12)
|
FGMACM |
1:20.27 |
1:16.64 |
-3.63 |
| 11 |
Fernandez, Eduardo P (12)
|
FGUNRA |
1:13.20 |
1:17.26 |
4.06 |
| 12 |
Bachmann, Klaus S (11)
|
FGMBS |
|
1:21.54 |
- |
| 13 |
Suarez, Javier (11)
|
FGMACM |
1:29.09 |
1:28.01 |
-1.08 |
| 14 |
Aball, Miguel (12)
|
FGASC |
|
1:28.43 |
- |
| 15 |
Fachetti-Carvhalo, Gabriel (12)
|
FGASC |
1:40.90 |
1:31.82 |
-9.08 |
| 16 |
Blanca, Luis F (11)
|
FGMACM |
1:27.13 |
1:32.34 |
5.21 |
| 17 |
Chuecos, Andres D (11)
|
FGMACM |
1:32.09 |
1:33.01 |
0.92 |
| 18 |
Paucar, Brandon A (11)
|
FGMACM |
|
1:44.71 |
- |
| 19 |
Menendez, Daniel S (11)
|
FGMACM |
|
1:48.34 |
- |
| 20 |
Varona, Gabriel V (11)
|
FGMACM |
|
2:01.78 |
- |
|
Verdi, Luca L (11)
|
FGCANE |
|
NS |
- |
|
Tampied, Mateo * (11)
|
FGCANE |
1:26.77 |
NS |
- |
|
Kassin, Roberto J (12)
|
FGMCDA |
|
NS |
- |
|
Sanchez, Manuel (12)
|
FGASC |
|
NS |
- |