| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Ferguson, Dylan C (12)
|
FGMACM |
34.44 |
34.08 |
-0.36 |
| 2 |
Pineiro, Anthony A (11)
|
FGSDST |
36.16 |
35.78 |
-0.38 |
| 3 |
Martin, Giulian A (12)
|
FGCANE |
43.14 |
35.97 |
-7.17 |
| 4 |
Kauefate, Jorge (12)
|
FGSDST |
36.85 |
37.03 |
0.18 |
| 5 |
Covic, Leo (12)
|
FGSFTL |
|
37.96 |
- |
| 6 |
Angel, Nathan (11)
|
FGMACM |
39.20 |
39.95 |
0.75 |
| 7 |
Rincon, Carlos J (12)
|
FGMWA |
42.05 |
40.79 |
-1.26 |
| 8 |
Ruiz, Jesus F (11)
|
FGSDST |
42.42 |
40.92 |
-1.50 |
| 9 |
Di Persio, Fabio (12)
|
FGCANE |
46.38 |
41.62 |
-4.76 |
| 10 |
Gardner, Patrick C (12)
|
FGGRSC |
44.92 |
42.50 |
-2.42 |
| 11 |
Casarreal, David G (11)
|
FGMACM |
|
42.61 |
- |
| 12 |
Tong, Alexander K (12)
|
FGRANS |
|
44.01 |
- |
| 13 |
Tovar, Sebastian R (11)
|
FGGRSC |
45.23 |
44.44 |
-0.79 |
| 14 |
Tapias, Ethan (12)
|
FGGRSC |
54.69 |
44.56 |
-10.13 |
| 15 |
Espinal, Joaquin E (12)
|
FGRANS |
|
45.50 |
- |
| 16 |
Cheng, Jason Y (12)
|
FGGRSC |
|
45.67 |
- |
| 17 |
Forero-Onofre, Daniel (11)
|
FGSDST |
|
46.29 |
- |
| 18 |
Juodzevicius, Joel B (12)
|
UNAT |
52.46 |
47.66 |
-4.80 |
| 19 |
Agarwal, Ishaan (11)
|
FGGRSC |
53.00 |
49.96 |
-3.04 |
| 20 |
Villavicencio, Samuel E (12)
|
FGGRSC |
53.97 |
50.05 |
-3.92 |
| 21 |
Gonzalez, Michael A (11)
|
FGGRSC |
49.12 |
50.63 |
1.51 |
| 22 |
Monteverde, Fabio A (12)
|
FGSDST |
|
52.66 |
- |
| 23 |
Correa, Sebastian E (11)
|
FGSDST |
|
53.90 |
- |
| 24 |
Yadav, Vayun A (11)
|
FGAJSC |
|
57.32 |
- |
| 25 |
Perez, Luke A (11)
|
FGAJSC |
1:00.56 |
59.01 |
-1.55 |
| 26 |
Fonseca, Ian J (12)
|
FGAJSC |
|
1:04.91 |
- |
|
Garcia, Alex (11)
|
FGMACM |
|
NS |
- |
|
Morales, Andres I (11)
|
FGGRSC |
|
NS |
- |
|
Carey, Connor I (12)
|
FGSFTL |
|
NS |
- |