| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Vreeland, Zack G (17)
|
MRMVA |
51.30 |
49.44 |
-1.86 |
| 2 |
Mckeon, Eian K (16)
|
MRPBAC |
52.00 |
52.08 |
0.08 |
| 3 |
Tartakovsky, Michael I (16)
|
MRPAC |
52.95 |
54.09 |
1.14 |
| 4 |
Rodriguez, Frank S (17)
|
MRWSSC |
53.27 |
54.87 |
1.60 |
| 5 |
Neville, Aiden J (16)
|
MRPAC |
54.20 |
54.93 |
0.73 |
| 6 |
Griffenkranz, Sean M (16)
|
MRPAC |
51.68 |
55.13 |
3.45 |
| 7 |
Ridge, Liam M (17)
|
MRPAC |
56.62 |
55.32 |
-1.30 |
| 8 |
Jorge, Dylan E (17)
|
MRDA |
54.87 |
55.83 |
0.96 |
| 9 |
Vreeland, Caleb R (15)
|
MRMVA |
55.97 |
56.41 |
0.44 |
| 10 |
Nicholas, Chauncey (15)
|
MRDA |
53.19 |
57.92 |
4.73 |
| 11 |
Terjanian, Jack G (15)
|
MRPAC |
57.73 |
59.71 |
1.98 |
| 12 |
Nicholas, Charles (16)
|
MRDA |
53.40 |
1:00.09 |
6.69 |
| 13 |
Schiele, William B (15)
|
MRMVA |
1:18.31 |
1:08.48 |
-9.83 |
|
O'Connor, Elias G (17)
|
MRPAC |
50.41 |
NS |
- |