| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Yeo, Meng E (13)
|
NTPAC |
56.23 |
56.99 |
0.76 |
| 2 |
Barker, Grayden R (13)
|
NTPAC |
1:03.81 |
59.77 |
-4.04 |
| 3 |
McHam, Tristan D (15)
|
NTPAC |
1:17.17 |
1:06.25 |
-10.92 |
| 4 |
Rogers, Braxton J (15)
|
NTPAC |
1:22.90 |
1:10.06 |
-12.84 |
| 5 |
Aboutaleb, Hamza A (13)
|
NTPAC |
1:20.83 |
1:16.31 |
-4.52 |
| 6 |
Pedersen, Zane G (14)
|
NTPAC |
1:18.42 |
1:18.83 |
0.41 |
| 7 |
Stewart, William D (13)
|
NTPAC |
|
1:20.67 |
- |
| 8 |
McKay, Corvus B (13)
|
NTPAC |
1:21.49 |
1:20.68 |
-0.81 |
| 9 |
Maier, John Benjamin G (16)
|
NTPAC |
1:21.54 |
1:21.79 |
0.25 |
|
Beasley III, William R (16)
|
NTPAC |
1:20.58 |
NS |
- |
|
Lowry, Christian F (14)
|
NTPAC |
1:07.83 |
NS |
- |