| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Welch, Ethan J (14)
|
ILDCST |
1:09.50 |
1:10.24 |
0.74 |
| 2 |
Johnson, Noah W (14)
|
ILDCST |
1:09.96 |
1:13.78 |
3.82 |
| 3 |
Par, Mason V (13)
|
ILLATT |
1:17.15 |
1:16.43 |
-0.72 |
| 4 |
VanderSchee, Calvin A (13)
|
ILDCST |
1:23.27 |
1:25.29 |
2.02 |
| 5 |
Biundo, Nicholas G (13)
|
ILDCST |
1:30.61 |
1:28.40 |
-2.21 |
| 6 |
Micek, Matthew (13)
|
ILLATT |
1:29.28 |
1:29.76 |
0.48 |
| 7 |
Campbell, Timothy I (13)
|
ILUNFV |
1:32.45 |
1:29.83 |
-2.62 |
| 8 |
Fedorenko, Maximus A (13)
|
ILLATT |
1:25.10 |
1:31.40 |
6.30 |
| 9 |
Ali, Yuseph M (14)
|
ILFVFY |
1:42.89 |
1:32.80 |
-10.09 |
| 10 |
Walters, Aidric C (13)
|
ILDCST |
1:36.32 |
1:34.11 |
-2.21 |