| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
DeWitt, Billy P (15)
|
MRQNS |
53.79 |
56.04 |
2.25 |
| 2 |
Sommerstad, Ryan T (16)
|
MRTVSC |
58.56 |
57.71 |
-0.85 |
| 3 |
Placencia-Nazareno, Ethan N (16)
|
MRTVSC |
56.19 |
58.11 |
1.92 |
| 4 |
Smith, Dean C (15)
|
MRQNS |
1:00.42 |
59.50 |
-0.92 |
| 5 |
Paton, Gavin C (16)
|
MRQNS |
|
1:00.14 |
- |
| 6 |
Knight, Liam M (15)
|
MREHY |
57.91 |
1:00.76 |
2.85 |
| 7 |
Casalinuovo, Johnny A (16)
|
MRTVSC |
56.12 |
1:01.59 |
5.47 |
| 8 |
Karaosmanoglu, Bora (15)
|
MRTVSC |
1:01.91 |
1:02.39 |
0.48 |
| 9 |
O'Sullivan-Ulrich, Liam S (15)
|
MRTVSC |
1:00.21 |
1:05.34 |
5.13 |
| 10 |
Holmes, Michael J (15)
|
MRCSDC |
|
1:18.24 |
- |
| 11 |
Godbout, Aidan C (15)
|
MRCSDC |
|
1:20.80 |
- |