| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Martin, Giulian A (12)
|
FGCANE |
1:04.77 |
1:05.79 |
1.02 |
| 2 |
Charnou, Maksim (12)
|
FGNMST |
1:21.52 |
1:20.44 |
-1.08 |
| 3 |
Plokhotnichenko, Ernest (12)
|
FGEA |
1:19.02 |
1:22.23 |
3.21 |
| 4 |
Balade, Nahuel A (12)
|
UNAT |
|
1:25.30 |
- |
| 5 |
Sullivan, Ethan M (12)
|
FGEA |
1:33.25 |
1:27.18 |
-6.07 |
| 6 |
Fernandez, Luca V (11)
|
FGEA |
1:38.91 |
1:31.91 |
-7.00 |
| 7 |
Tovar, Sebastian R (12)
|
UNAT |
|
1:36.98 |
- |
| 8 |
Serhiienko, Vladyslav (12)
|
FGMSAT |
|
1:39.21 |
- |
| 9 |
Duran, Brayden A (12)
|
FGMACM |
1:58.18 |
1:41.33 |
-16.85 |
| 10 |
Wilson, Nicholas J (11)
|
FGCANE |
1:50.15 |
1:41.74 |
-8.41 |
| 11 |
DE LA Cabada, Kyle J (12)
|
FGRANS |
|
1:41.87 |
- |
| 12 |
Bosch, David D (11)
|
FGCANE |
1:56.29 |
1:44.60 |
-11.69 |
| 13 |
Espinal, Joaquin E (12)
|
FGRANS |
|
1:45.36 |
- |
| 14 |
Garcia, Alex (11)
|
FGMACM |
|
1:55.44 |
- |
| 15 |
Sun, Solon (12)
|
FGRANS |
1:56.25 |
1:57.38 |
1.13 |
|
De Angulo, Christopher W (11)
|
FGMS |
1:36.14 |
NS |
- |
|
Kolotov, Konstantin (11)
|
FGMSAT |
1:49.53 |
NS |
- |
|
Benbekhti, Yanis Y (11)
|
FGRANS |
1:31.45 |
NS |
- |