| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Gonzalez, Kenneth (10)
|
FGMACM |
36.68 |
36.07 |
-0.61 |
| 2 |
Cannings, Oliver G (10)
|
FGAJSC |
|
39.32 |
- |
| 3 |
Aguila, Jorge E (10)
|
FGMWA |
40.85 |
39.65 |
-1.20 |
| 4 |
Ruiz, Alejandro (8)
|
FGMACM |
40.65 |
40.32 |
-0.33 |
| 5 |
Adan, Daniel S (9)
|
FGMACM |
|
43.48 |
- |
| 6 |
Clarke, Kavon Z (10)
|
FGSFTL |
|
43.94 |
- |
| 7 |
Meneses, Matthew L (8)
|
FGMACM |
|
44.76 |
- |
| 8 |
Kokidko, Nicolas N (10)
|
UNAT |
|
46.40 |
- |
| 9 |
Fothergill, Liam (9)
|
FGMWA |
43.21 |
46.77 |
3.56 |
| 10 |
Almuina, Brandon * (8)
|
FGMACM |
|
47.69 |
- |
| 11 |
Cavani, Emiliano * (10)
|
UNAT |
45.23 |
48.32 |
3.09 |
| 12 |
Adan, Matthew S (8)
|
FGMACM |
|
50.76 |
- |
| 13 |
Lozano, Julian (10)
|
FGGRSC |
1:06.35 |
51.87 |
-14.48 |
| 14 |
Bravo, Antonio E (10)
|
FGSDST |
1:03.63 |
52.42 |
-11.21 |
| 15 |
Martinez, Leonardo * (10)
|
FGMACM |
|
54.19 |
- |
| 16 |
Ilonta, Nicolas P (8)
|
FGSFTL |
|
56.97 |
- |
| 17 |
Aguirre, Alessandro L (10)
|
FGMS |
|
58.26 |
- |
| 18 |
Barguez, Jacob A (9)
|
FGMACM |
|
1:00.99 |
- |
| 19 |
Dame, Gabriel W (8)
|
FGCANE |
|
1:07.56 |
- |
| 20 |
Dogan, Alessandro (9)
|
FGSFTL |
|
1:07.65 |
- |
| 21 |
Boarato, Gabriel D (9)
|
FGGRSC |
1:18.94 |
1:08.89 |
-10.05 |
| 22 |
Vinod, Varun (8)
|
FGSDST |
|
1:11.62 |
- |
| 23 |
Bernten, Simon I (9)
|
FGAJSC |
|
1:14.28 |
- |
|
Lenz Cesar, Guilherme B (9)
|
FGGRSC |
|
DQ |
- |
|
Capote, Alejandro (10)
|
FGMS |
|
DQ |
- |
|
Garcia, Alan N (10)
|
FGMACM |
57.75 |
NS |
- |
|
Ferenc, Hudson (9)
|
FGSFTL |
|
NS |
- |