| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Kui, Adam W (10)
|
MRRFAC |
44.04 |
43.06 |
-0.98 |
| 2 |
Kui, Barnabas Z (10)
|
MRRFAC |
40.50 |
43.54 |
3.04 |
| 3 |
Croutch, Tyler D (9)
|
MRMWDA |
49.26 |
44.19 |
-5.07 |
| 4 |
Corrado, John Caleb E (10)
|
MRMWDA |
46.47 |
45.09 |
-1.38 |
| 5 |
Berko, Reuben L (9)
|
MRNDAC |
43.47 |
46.43 |
2.96 |
| 6 |
Russell, Edward W (10)
|
MRNDAC |
51.95 |
46.77 |
-5.18 |
| 7 |
Shaw, Jaden K (10)
|
MRMWDA |
46.02 |
47.32 |
1.30 |
| 8 |
Felker, Christopher D (10)
|
MRMWDA |
50.99 |
49.02 |
-1.97 |
| 9 |
Howard, Sam W (10)
|
MRRFAC |
54.75 |
51.94 |
-2.81 |
| 10 |
Vega, Isidro R (9)
|
MRRFAC |
53.70 |
53.08 |
-0.62 |
| 11 |
Cheney, Brooker P (9)
|
MRNDAC |
|
53.96 |
- |
| 12 |
Hewitt, Jack D (10)
|
MRNDAC |
52.01 |
54.25 |
2.24 |
| 13 |
Hewitt, Peter M (10)
|
MRNDAC |
49.83 |
55.62 |
5.79 |
| 14 |
Russell, Liam R (10)
|
MRNDAC |
52.74 |
1:02.23 |
9.49 |
| 15 |
Reilly, Eyan E (9)
|
MRNDAC |
|
1:25.80 |
- |
|
Chiappetta, Paolo A (9)
|
MRRFAC |
1:12.26 |
DQ |
- |
|
Dorner, Declan M (10)
|
MRNDAC |
48.29 |
NS |
- |