| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Wong, Aaron (17)
|
MRSS |
51.17 |
52.26 |
1.09 |
| 2 |
Williams, Aaron D (17)
|
MRFAST |
53.04 |
52.65 |
-0.39 |
| 3 |
Casement, Justin (15)
|
MRLIAC |
53.74 |
53.28 |
-0.46 |
| 4 |
Illuzzi, Nicholas D (16)
|
MRLIAC |
55.86 |
55.43 |
-0.43 |
| 5 |
Derry, Yashua A (17)
|
MRFAST |
54.49 |
55.58 |
1.09 |
| 6 |
Mulderrig, Aidan m (16)
|
MRLIAC |
56.24 |
56.13 |
-0.11 |
| 7 |
Chun, Sean M (15)
|
MRLIAC |
56.51 |
56.27 |
-0.24 |
| 8 |
Bailey, Nicholas X (16)
|
MRLIAC |
56.48 |
57.66 |
1.18 |
| 9 |
Shteynberg, Samuel D (15)
|
MRHS |
56.00 |
57.70 |
1.70 |
| 10 |
Kelly, James P (15)
|
MRSS |
57.93 |
58.77 |
0.84 |
| 11 |
Lai, Christopher B (11)
|
MRHS |
59.86 |
1:01.37 |
1.51 |
| 12 |
McCullough, Dorean J (15)
|
MRLIAC |
1:03.42 |
1:01.65 |
-1.77 |
| 13 |
Altawab, Mostafa (14)
|
MRHS |
1:04.17 |
1:01.74 |
-2.43 |
| 14 |
Elkhouly, Youssef A (11)
|
MRHS |
1:01.60 |
1:03.98 |
2.38 |
| 15 |
Marrero, Devin (20)
|
MRSS |
|
1:23.20 |
- |