| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Olinger, Phallen (8)
|
AMUN-R |
45.70 |
43.30 |
-2.40 |
| 1 |
Haas, William C (8)
|
AMKW |
1:03.36 |
59.34 |
-4.02 |
| 2 |
Buzzard, Simon J (8)
|
AMNGAC |
58.50 |
1:01.36 |
2.86 |
| 2 |
Marcincavage, Roddy G (10)
|
AMNAC |
44.72 |
45.90 |
1.18 |
| 3 |
Pickett, Christopher B (8)
|
AMMAC |
1:00.64 |
1:02.67 |
2.03 |
| 3 |
Petrina, William R (9)
|
AMNGAC |
48.94 |
46.56 |
-2.38 |
| 4 |
Pickett, Noah M (10)
|
AMMAC |
51.02 |
48.85 |
-2.17 |
| 5 |
Schneider, Ralston M (10)
|
AMFAST |
44.92 |
49.54 |
4.62 |
| 6 |
Book, Parker R (10)
|
AMSRST |
46.19 |
50.25 |
4.06 |
| 7 |
Ruff, Desmond C (10)
|
AMKW |
52.21 |
52.20 |
-0.01 |
| 8 |
McKelvey, Greyson O (9)
|
AMNGAC |
49.60 |
52.40 |
2.80 |
| 9 |
Tucker, Jacob A (10)
|
AMCSC |
52.53 |
54.03 |
1.50 |