| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Stephens, Benton S (12)
|
GUTWST |
1:12.30 |
1:13.06 |
0.76 |
| 2 |
Yu, Charles R (11)
|
GU300 |
1:12.32 |
1:13.70 |
1.38 |
| 3 |
Gray, Thomas-Joe T (12)
|
GUCATS |
1:16.32 |
1:18.55 |
2.23 |
| 4 |
De la Barreda, Diego (11)
|
GUTWST |
1:25.88 |
1:20.95 |
-4.93 |
| 5 |
Desai, Rayan M (11)
|
GUTWST |
1:19.04 |
1:23.32 |
4.28 |
| 6 |
Lanigan, Aedan T (11)
|
GUTWST |
1:20.33 |
1:25.14 |
4.81 |
| 7 |
Rautenbach, Daniel P (11)
|
GUTWST |
1:19.95 |
1:25.22 |
5.27 |
| 8 |
Niewenhous, John M (12)
|
GUTWST |
1:23.96 |
1:25.64 |
1.68 |
| 9 |
Suarez, Cruz L (11)
|
GUVSST |
1:24.06 |
1:26.18 |
2.12 |
| 10 |
Pena, Bruno (11)
|
GUTWST |
1:23.16 |
1:26.42 |
3.26 |
| 11 |
Figueredo-Weiser, Lukas (11)
|
GUVSST |
1:30.70 |
1:27.03 |
-3.67 |
| 12 |
Allen, Braxton J (11)
|
GUTWST |
1:25.40 |
1:28.46 |
3.06 |
| 12 |
Lin, Vincent Y (12)
|
GU300 |
1:27.45 |
1:28.46 |
1.01 |
| 14 |
Carter, Matthew N (11)
|
GUVSST |
1:32.28 |
1:33.54 |
1.26 |
| 15 |
Ricci, Luca R (11)
|
GUTWST |
1:34.80 |
1:37.21 |
2.41 |
| 16 |
Teirlinck, Josse (11)
|
GUTWST |
1:40.03 |
1:48.94 |
8.91 |
|
Koymarianos, Ioannis G (11)
|
GUTWST |
1:52.40 |
NS |
- |