| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Helfrich, Gage R (11)
|
ILDCST |
1:14.58 |
1:16.98 |
2.40 |
| 2 |
Sullivan, Kevin G (12)
|
ILDCST |
1:23.03 |
1:22.09 |
-0.94 |
| 3 |
Graham, Matteo R (12)
|
ILDCST |
1:29.14 |
1:23.23 |
-5.91 |
| 4 |
Hadjistamoulou, Anestis (12)
|
ILLATT |
1:24.65 |
1:24.76 |
0.11 |
| 5 |
Skrzypek, Alexander E (12)
|
ILDCST |
1:28.49 |
1:26.33 |
-2.16 |
| 6 |
Johnson, Evan M (11)
|
ILDCST |
1:25.65 |
1:28.98 |
3.33 |
| 7 |
Torres, Aidan E (11)
|
ILFVFY |
1:43.94 |
1:31.83 |
-12.11 |
| 8 |
De La Cruz, Samuel S (12)
|
ILDCST |
1:33.21 |
1:32.59 |
-0.62 |
| 9 |
Conroy, Devin L (12)
|
ILLATT |
1:40.30 |
1:32.76 |
-7.54 |
| 10 |
Spleha, Christopher M (11)
|
ILFVFY |
1:54.14 |
1:43.88 |
-10.26 |