| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Fanjul, Maximo A (12)
|
FGCANE |
35.99 |
34.34 |
-1.65 |
| 2 |
Corona, Alejandro (12)
|
FGASC |
35.47 |
34.68 |
-0.79 |
| 3 |
Puig, Gabriel (12)
|
FGMACM |
45.83 |
35.91 |
-9.92 |
| 4 |
Alvarez, Robert N (12)
|
FGMACM |
40.14 |
36.68 |
-3.46 |
| 5 |
Echeverria, Giancarlo * (11)
|
FGMACM |
37.17 |
36.74 |
-0.43 |
| 6 |
Fernandez, Eduardo P (12)
|
FGUNRA |
36.95 |
36.97 |
0.02 |
| 7 |
Charnou, Maksim (11)
|
FGNMST |
37.83 |
38.09 |
0.26 |
| 8 |
Coronel, Victor A (12)
|
FGMBS |
|
40.60 |
- |
| 9 |
Grenier, Michael * (11)
|
FGCANE |
43.03 |
40.62 |
-2.41 |
| 10 |
Gonzalez, Daniel (12)
|
FGASC |
44.36 |
41.38 |
-2.98 |
| 11 |
Aball, Miguel (12)
|
FGASC |
|
54.88 |
- |
| 12 |
Chuecos, Andres D (11)
|
FGMACM |
56.30 |
56.91 |
0.61 |
| 13 |
Sarypbekov, Kayrat E (11)
|
FGNMST |
1:02.16 |
1:03.27 |
1.11 |
|
Paucar, Brandon A (11)
|
FGMACM |
1:03.83 |
1:06.94 |
3.11 |
|
Tampied, Mateo * (11)
|
FGCANE |
39.70 |
NS |
- |
|
Sanchez, Manuel (12)
|
FGASC |
47.52 |
NS |
- |
|
Suarez, Javier (11)
|
FGMACM |
54.24 |
NS |
- |