| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Machado, Diego (16)
|
FGTSA |
59.25 |
59.77 |
0.52 |
| 3 |
Dworet, Nicholas P (17)
|
FGTSA |
1:03.13 |
1:03.76 |
0.63 |
| 4 |
Cassidy, Padraic P (17)
|
FGTSA |
1:03.06 |
1:05.69 |
2.63 |
| 5 |
Rodriguez, Agustin F (12)
|
FGHSC |
1:09.75 |
1:06.13 |
-3.62 |
| 6 |
Miller, Maxwell A (16)
|
FGYSF |
1:06.24 |
1:06.93 |
0.69 |
| 7 |
Avellaneda, Diego M (16)
|
FGTSA |
1:06.15 |
1:08.05 |
1.90 |
| 8 |
Quijada, Daniel (14)
|
FGHSC |
|
1:09.01 |
- |
| 9 |
Escobar, Daniel E (15)
|
FGTSA |
1:07.58 |
1:10.21 |
2.63 |
| 10 |
Savino, Gian L (16)
|
FGCSSC |
1:12.11 |
1:12.31 |
0.20 |
| 11 |
Franzino, Patrick J (15)
|
FGCSSC |
1:11.07 |
1:12.53 |
1.46 |
| 12 |
Garbutt, David J (17)
|
FGCSSC |
1:07.61 |
1:13.20 |
5.59 |
| 13 |
Hategan, Darien (14)
|
FGYSF |
1:15.39 |
1:14.80 |
-0.59 |
| 14 |
Seniuta, Tadas (15)
|
FGSAS |
1:35.07 |
1:15.42 |
-19.65 |
| 15 |
Lopez-Casula, Marcoaurelio (12)
|
FGHSC |
1:19.05 |
1:17.06 |
-1.99 |
| 16 |
Bonasera, Jason N (14)
|
FGCSSC |
1:18.11 |
1:18.07 |
-0.04 |
| 17 |
Geathers, Jayden A (13)
|
FGTSA |
|
1:18.44 |
- |
| 18 |
Bagiotti, Jonathan M (13)
|
FGYSF |
1:17.30 |
1:20.88 |
3.58 |
| 19 |
Brezenski, Joshua F (12)
|
FGPST |
1:23.76 |
1:23.70 |
-0.06 |
| 20 |
Aronsohn, Matthew C (12)
|
FGSAS |
|
1:23.94 |
- |
| 21 |
Moreno, Luis E (13)
|
FGHSC |
|
1:25.95 |
- |
| 22 |
Narbonne, Cole T (13)
|
FGCSSC |
1:30.41 |
1:26.19 |
-4.22 |
| 23 |
Alvarez, Alejandro (12)
|
FGCSSC |
1:33.88 |
1:28.25 |
-5.63 |
| 24 |
Domokos-Murphy, William R (8)
|
FGSAS |
|
1:28.47 |
- |
| 25 |
Musa, Farouk (9)
|
FGHAT |
1:34.47 |
1:32.46 |
-2.01 |
| 26 |
Connor, Liam J (12)
|
FGPST |
1:54.81 |
1:33.21 |
-21.60 |
| 27 |
Karachun, Matviy (9)
|
FGYSF |
|
1:33.47 |
- |
| 28 |
Guio, Sebastian (9)
|
FGYSF |
|
1:39.14 |
- |
|
Nordheim, Gregory A (12)
|
FGSAS |
|
NS |
- |