| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Sislen, Leonardo S (11)
|
PVNCAP |
38.44 |
38.08 |
-0.36 |
| 1 |
Stello, Hunter R (11)
|
PVPAC |
50.58 |
48.34 |
-2.24 |
| 1 |
Hameni, Ezekiel (12)
|
PVPAC |
45.65 |
48.34 |
2.69 |
| 2 |
Olivo Cauberghs, Esteban C (11)
|
PVNCAP |
37.82 |
38.17 |
0.35 |
| 3 |
Lightfoot, William A (11)
|
PVERSC |
1:03.20 |
1:02.17 |
-1.03 |
| 3 |
Kleczek, Antoni I (12)
|
PVUN |
38.04 |
38.35 |
0.31 |
| 4 |
Das, Rohit G (12)
|
PVNCAP |
38.92 |
39.43 |
0.51 |
| 5 |
Reeves, John N (12)
|
PVNCAP |
37.13 |
39.49 |
2.36 |
| 6 |
Ustundag, Sarp (11)
|
PVNCAP |
40.80 |
40.97 |
0.17 |
| 7 |
McMahon, William N (12)
|
PVPAC |
46.49 |
41.45 |
-5.04 |
| 8 |
Kaleem, Jacob D (12)
|
PVNCAP |
44.87 |
41.88 |
-2.99 |
| 10 |
Girimonte, Owen M (12)
|
PVTIBU |
38.36 |
42.28 |
3.92 |
| 11 |
Garcia, Chase A (12)
|
VATORP |
38.64 |
43.02 |
4.38 |
|
Xu, Kevin (12)
|
PVPAC |
1:29.42 |
DQ |
- |
|
Flick, Jason T (12)
|
PVPAC |
44.84 |
NS |
- |
|
Belen, Alfonso M (12)
|
PVERSC |
48.07 |
NS |
- |