| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Ralston, Emmett J (14)
|
PNOCA |
1:02.24 |
1:00.01 |
-2.23 |
| 2 |
Leach, Mason A (13)
|
ORHEAT |
1:04.89 |
1:03.83 |
-1.06 |
| 3 |
Schreiber, Gabriel C (13)
|
ORLOSC |
1:05.18 |
1:04.32 |
-0.86 |
| 4 |
Roller, Tyler J (13)
|
PCDACA |
1:04.46 |
1:04.71 |
0.25 |
| 5 |
Yamaguchi, Riku (13)
|
PNOCA |
1:05.58 |
1:05.74 |
0.16 |
| 6 |
Roy, Kartavya (14)
|
ORBLAC |
1:05.69 |
1:07.10 |
1.41 |
| 7 |
Ma, Jaden F (13)
|
PNSMAC |
1:07.08 |
1:07.49 |
0.41 |
| 8 |
Crafts, Amos (14)
|
ORPAC |
1:07.21 |
1:08.94 |
1.73 |
| 9 |
Pangilinan, Jon Bien (14)
|
ORHEAT |
1:07.51 |
1:09.41 |
1.90 |
| 10 |
Kabacy, Alexander E (14)
|
PNSMAC |
1:08.07 |
1:10.06 |
1.99 |