| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Hennessee, August R (8)
|
MRBGNW |
47.31 |
45.39 |
-1.92 |
| 2 |
Ladeira, Marcus C (8)
|
MRLGAC |
50.69 |
47.70 |
-2.99 |
| 3 |
Silverman, Owen S (8)
|
MRCOND |
|
47.91 |
- |
| 4 |
Farrelly, Patrick E (8)
|
MRWEST |
|
48.47 |
- |
| 5 |
Curristin, Cai (7)
|
MRCOND |
50.23 |
48.85 |
-1.38 |
| 6 |
Calat, Drew R (7)
|
MRBGNW |
|
49.00 |
- |
| 7 |
Gibbons, Andrew J (8)
|
MRCOND |
|
56.31 |
- |
| 8 |
Cordero, Arden P (8)
|
MRWEST |
1:03.89 |
56.67 |
-7.22 |
| 9 |
Ponce-Erickson, Konnor (8)
|
MRCOND |
|
1:00.61 |
- |
| 10 |
Cushing-Savvi, Silas V (7)
|
MRCOND |
|
1:00.78 |
- |
| 11 |
Sawyer, Maison L (8)
|
MRCOND |
|
1:02.41 |
- |
| 12 |
Konieczny, Eryk P (8)
|
MRWEST |
|
1:05.03 |
- |
|
Hassanzadeh, Sam (8)
|
MRBGNW |
|
DQ |
- |
|
Pan, Arthur H (7)
|
MRLIFE |
|
DQ |
- |