| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Ivan, David (12)
|
NEGS |
40.58 |
39.55 |
-1.03 |
| 2 |
Arquillano, Melson Jayven L (12)
|
NEHAY |
40.21 |
40.15 |
-0.06 |
| 3 |
Carlone, Nicholas L (12)
|
NEMTSC |
41.65 |
42.32 |
0.67 |
| 4 |
Hardjosuwito, Andrew I (12)
|
NERAYS |
48.04 |
44.86 |
-3.18 |
| 5 |
Herrera, Javier I (11)
|
NEMTSC |
46.88 |
46.20 |
-0.68 |
| 6 |
Rice, Wyatt B (11)
|
NERAYS |
47.45 |
47.13 |
-0.32 |
| 7 |
Gould, Derek G (12)
|
NEBSST |
47.16 |
47.20 |
0.04 |
| 8 |
Tran, Theo C (11)
|
NEHAY |
53.20 |
49.54 |
-3.66 |
| 9 |
Ciuica, Nicholas C (12)
|
NEHAY |
49.29 |
49.80 |
0.51 |
| 10 |
Hong, Evan C (11)
|
NEMTSC |
52.97 |
50.72 |
-2.25 |
| 11 |
Lyons, Benjamin L (12)
|
NEMTSC |
56.07 |
53.96 |
-2.11 |
| 12 |
Giugliano, Maximilian (12)
|
NEMTSC |
57.75 |
58.04 |
0.29 |
| 13 |
Nandakumar, Tarun (11)
|
NEMTSC |
1:09.33 |
1:05.88 |
-3.45 |
| 14 |
Spraggon, Liam G (11)
|
NEMTSC |
1:08.35 |
1:10.70 |
2.35 |
|
Walden, Samuel M (11)
|
NERAYS |
1:06.18 |
DQ |
- |