| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Di Persio, Fabio (12)
|
FGCANE |
1:04.05 |
1:02.93 |
-1.12 |
| 2 |
Lesentier, Liam M (12)
|
FGEA |
1:03.15 |
1:05.16 |
2.01 |
| 3 |
Morel, Julien M (12)
|
FGMBS |
1:09.27 |
1:06.53 |
-2.74 |
| 4 |
Gratzer, Andre (12)
|
FGMJST |
|
1:09.27 |
- |
| 5 |
Martinez Cabrera, Gabriel E (11)
|
FGUNA1 |
|
1:09.82 |
- |
| 6 |
Caetano, Tiago (11)
|
FGMJST |
|
1:14.80 |
- |
| 7 |
Bachmann, Klaus S (11)
|
FGMBS |
1:21.45 |
1:15.78 |
-5.67 |
| 8 |
Nicolai, Heaven G (11)
|
FGMBS |
1:18.18 |
1:17.67 |
-0.51 |
| 9 |
Proenza, Jordan (12)
|
FGSWAT |
1:20.98 |
1:17.91 |
-3.07 |
| 10 |
Marques, Mateo (11)
|
FGMBS |
1:19.71 |
1:21.65 |
1.94 |
| 11 |
Atkatz, Skyler T (11)
|
FGMBS |
1:14.30 |
1:22.01 |
7.71 |
| 12 |
Bromley, Warren (11)
|
FGMBS |
1:23.00 |
1:23.13 |
0.13 |
| 13 |
DePass, Christian M (11)
|
FGAJSC |
|
1:24.63 |
- |
| 14 |
Serhiienko, Vladyslav (11)
|
FGMSAT |
|
1:41.44 |
- |
| 15 |
Garcia, Alex (11)
|
FGMACM |
|
1:45.81 |
- |
| 16 |
Perez, Luke A (11)
|
FGAJSC |
1:44.59 |
1:49.91 |
5.32 |
| 17 |
Varona, Gabriel V (11)
|
FGMACM |
2:01.78 |
1:55.27 |
-6.51 |
|
Tolstov, Alexandr * (11)
|
FGNMST |
1:29.90 |
NS |
- |
|
Fonseca, Ian J (12)
|
FGAJSC |
|
NS |
- |