| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Arquillano, Melson Jayven L (12)
|
NEHAY |
1:13.18 |
1:13.17 |
-0.01 |
| 2 |
Day, Rudd T (11)
|
NESTS |
1:19.62 |
1:15.52 |
-4.10 |
| 3 |
Maron, Jack J (12)
|
NEHAY |
1:15.01 |
1:15.79 |
0.78 |
| 4 |
Kennedy, Samuel P (12)
|
NEATST |
1:15.39 |
1:15.93 |
0.54 |
| 5 |
Giles, Ivan A (12)
|
NEANA |
1:23.45 |
1:19.67 |
-3.78 |
| 6 |
McDonald, Callum B (12)
|
NEATST |
1:11.42 |
1:19.78 |
8.36 |
| 7 |
Crisafulli, Dominic J (12)
|
NEMWYS |
|
1:20.95 |
- |
| 8 |
Franciosi, Bennett T (12)
|
NEHAY |
|
1:40.06 |
- |
| 9 |
Tyagi, Arav (12)
|
NEHAY |
1:47.38 |
1:43.90 |
-3.48 |
| 10 |
Sanchez, Kevin S (11)
|
NEPVAA |
|
1:53.79 |
- |
|
Shi, You H (11)
|
NEMWYS |
|
DQ |
- |
|
Gammell, Finan M (11)
|
NEUN |
1:30.91 |
DQ |
- |