| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Gilbertson, Charles (12)
|
IABWST |
58.23 |
59.80 |
1.57 |
| 2 |
Robie, Nicholas M (12)
|
IADSMY |
|
1:02.82 |
- |
| 3 |
Briesemeister, Josef E (12)
|
IAMACR |
1:03.53 |
1:04.18 |
0.65 |
| 4 |
Morrissey, Charlie S (12)
|
IADSMY |
1:18.30 |
1:12.35 |
-5.95 |
| 5 |
Webber, Malachi (11)
|
SPS |
1:12.37 |
1:13.07 |
0.70 |
| 6 |
Evans, Ike P (11)
|
IADSMY |
1:14.83 |
1:15.71 |
0.88 |
| 7 |
Hammond, Alexander E (11)
|
IADSMY |
1:17.93 |
1:15.75 |
-2.18 |
| 8 |
Seberger, Jacob (11)
|
IABWST |
1:27.05 |
1:19.52 |
-7.53 |
| 9 |
Riniker, Xander J (11)
|
IAMACR |
1:26.19 |
1:22.49 |
-3.70 |
| 10 |
Pultz, Mason A (12)
|
IAMACR |
|
1:23.03 |
- |
| 11 |
Sharp, Dawson (12)
|
IAFC |
1:22.56 |
1:24.76 |
2.20 |