| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Green, Trevor A (15)
|
MRTVSC |
51.20 |
52.60 |
1.40 |
| 2 |
Savas, Brayden T (16)
|
MRTVSC |
52.51 |
52.68 |
0.17 |
| 3 |
Chang, Matthew P (15)
|
MRQNS |
53.35 |
53.85 |
0.50 |
| 4 |
Field, Jacob B (16)
|
MRTVSC |
53.44 |
54.10 |
0.66 |
| 5 |
Doran, Declan T (16)
|
MRQNS |
57.51 |
55.74 |
-1.77 |
| 6 |
Paton, Gavin C (16)
|
MRQNS |
57.42 |
56.52 |
-0.90 |
| 7 |
O'Sullivan-Ulrich, Liam S (15)
|
MRTVSC |
59.52 |
56.81 |
-2.71 |
| 8 |
McGeary, Connor C (15)
|
MRQNS |
55.07 |
57.34 |
2.27 |
| 9 |
Casalinuovo, Johnny A (16)
|
MRTVSC |
57.84 |
57.79 |
-0.05 |
| 10 |
Maddalena, Alexander (15)
|
MRHYB |
59.98 |
1:01.44 |
1.46 |
| 11 |
Man, Jaden (16)
|
MRQNS |
1:18.33 |
1:03.22 |
-15.11 |
| 12 |
Castro Rodriguez, Emanuel A (17)
|
MRCSDC |
|
1:34.90 |
- |
|
Park, Ian (17)
|
MRQNS |
55.37 |
NS |
- |
|
Smith, Dean C (15)
|
MRQNS |
1:03.51 |
NS |
- |
|
Buchen, Max H (18)
|
MRTVSC |
53.84 |
NS |
- |