| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Ardia, Vincent D (10)
|
NCACCH |
50.63 |
49.48 |
-1.15 |
| 1 |
Ruberte-Pabon, Evan A (9)
|
NCHAC |
54.30 |
53.58 |
-0.72 |
| 2 |
Davis, Elliott C (10)
|
NCACCH |
49.44 |
50.26 |
0.82 |
| 2 |
Billard, John H (10)
|
NCHAC |
58.05 |
54.00 |
-4.05 |
| 3 |
Kolling-Perin, Judah S (10)
|
NCACCH |
50.00 |
51.22 |
1.22 |
| 3 |
Wuthrich, Colin E (10)
|
NCHAC |
56.47 |
56.15 |
-0.32 |
| 4 |
Kotch, Daniel M (10)
|
NCACCH |
55.00 |
58.06 |
3.06 |
| 5 |
Lubrano, Charles R (10)
|
NCACCH |
1:00.00 |
1:00.00 |
0.00 |
| 6 |
Norcross, Kai L (10)
|
NCACCH |
55.97 |
1:01.16 |
5.19 |
| 7 |
Mayle, Elijah G (10)
|
NCYBAC |
1:01.10 |
1:05.17 |
4.07 |
| 8 |
L'Ecuyer, Thomas I (9)
|
NCGFSC |
|
1:07.29 |
- |
| 9 |
Vailati, Luca A (9)
|
NCYBAC |
|
1:07.37 |
- |
|
Schofield, Ronald F (10)
|
NCRACY |
1:06.69 |
DQ |
- |