| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Roszkowski, Hubert (12)
|
ILPALA |
40.41 |
39.96 |
-0.45 |
| 2 |
Torres, Aidan E (11)
|
ILFVFY |
41.20 |
40.54 |
-0.66 |
| 3 |
Pajula, Ethan T (12)
|
ILJETS |
43.46 |
40.82 |
-2.64 |
| 4 |
Piazza, Samuel J (11)
|
ILPALA |
41.28 |
41.68 |
0.40 |
| 5 |
Gilbert, Gavin L (12)
|
ILFVFY |
|
45.23 |
- |
| 6 |
Arett, Ryan N (12)
|
ILPALA |
45.87 |
46.40 |
0.53 |
| 7 |
Leidolf, George M (11)
|
ILPALA |
47.62 |
46.62 |
-1.00 |
| 8 |
Orlando, James S (11)
|
ILJETS |
43.96 |
46.95 |
2.99 |
| 9 |
Thill, Logan (11)
|
ILJETS |
44.88 |
48.43 |
3.55 |
| 10 |
VanderGiessen, Colin J (12)
|
ILPALA |
49.84 |
50.34 |
0.50 |
| 11 |
Ayala, Alejandro * (11)
|
ILFVFY |
54.39 |
51.74 |
-2.65 |
| 12 |
Mika, Pierson R (11)
|
ILJETS |
49.07 |
52.76 |
3.69 |
| 13 |
Singleton, Aiden (11)
|
ILKKEE |
1:16.60 |
1:06.48 |
-10.12 |
|
Hawkins, Landon B (11)
|
ILFVFY |
47.43 |
DQ |
- |
|
Stephens, Tristan R (11)
|
ILJETS |
|
DQ |
- |
|
Uhlenhopp, Mattson H (12)
|
ILFVFY |
45.80 |
NS |
- |
|
Schumpp, Declan J (12)
|
ILPAV |
|
NS |
- |