| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Rendon, Adrian O (10)
|
FGMWA |
30.85 |
31.11 |
0.26 |
| 2 |
Linares, Jesus D (10)
|
FGMACM |
41.33 |
35.73 |
-5.60 |
| 3 |
Lozano, Julian (10)
|
FGGRSC |
53.92 |
38.04 |
-15.88 |
| 4 |
Negrin, Axel (10)
|
FGGRSC |
37.35 |
38.08 |
0.73 |
| 5 |
Fothergill, Liam (10)
|
FGMWA |
37.80 |
38.69 |
0.89 |
| 6 |
Ives, Keagan R (10)
|
FGYSF |
45.07 |
40.27 |
-4.80 |
| 7 |
Romeo, Lucas J (10)
|
FGMACM |
41.96 |
43.00 |
1.04 |
| 8 |
Escoto, Alejandro J (10)
|
FGGRSC |
43.84 |
43.39 |
-0.45 |
| 9 |
Musiello, Bernardo P (10)
|
FGGRSC |
|
45.49 |
- |
| 10 |
Gittelsohn, Collin D (9)
|
FGYSF |
44.58 |
45.60 |
1.02 |
| 11 |
Corte Hernandez, Gabriel A (10)
|
FGMWA |
51.58 |
45.84 |
-5.74 |
| 12 |
Vega, Braison (9)
|
FGUN-0 |
|
48.43 |
- |
| 13 |
Munoz, Lucas (9)
|
FGYSF |
|
59.83 |
- |
| 14 |
Lenz Cesar, Guilherme B (9)
|
FGGRSC |
|
1:00.00 |
- |
| 15 |
Hampton, Trent D (9)
|
FGGRSC |
|
1:05.85 |
- |
|
Crespo, Alejandro D (10)
|
FGMACM |
|
NS |
- |