| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Freeze, Grant M (11)
|
WIOZ |
39.77 |
38.25 |
-1.52 |
| 2 |
Denis IV, James P (12)
|
WIEBSC |
42.53 |
38.97 |
-3.56 |
| 3 |
Vandenbusch, William M (11)
|
WIHSSB |
39.00 |
39.03 |
0.03 |
| 4 |
Hitchcock, Everhett R (11)
|
WISSTY |
42.87 |
39.25 |
-3.62 |
| 5 |
Yim, David M (11)
|
WIEBSC |
42.32 |
39.54 |
-2.78 |
| 6 |
Li, Daniel Y (12)
|
WISSTY |
39.09 |
39.93 |
0.84 |
| 7 |
Walter, Nolan L (11)
|
WIASC |
43.65 |
40.50 |
-3.15 |
| 8 |
Coppens, Kaige Z (11)
|
WIASC |
44.18 |
40.56 |
-3.62 |
| 9 |
Kim, Ethan P (12)
|
WISHOR |
42.35 |
41.48 |
-0.87 |
| 10 |
Strader, Joseph D (11)
|
WIEBSC |
1:18.79 |
42.91 |
-35.88 |
| 11 |
Llamazares, Mateo (12)
|
WIEBSC |
48.30 |
44.28 |
-4.02 |
| 12 |
Stickler, Colin E (12)
|
WIOZ |
45.93 |
44.88 |
-1.05 |
| 13 |
Foster, Michael D (12)
|
WIEBSC |
46.19 |
45.03 |
-1.16 |
| 14 |
Korabelnikov, Eythan (11)
|
WIEBSC |
49.74 |
45.41 |
-4.33 |
| 15 |
Foy, Declan K (12)
|
WISHOR |
48.82 |
46.71 |
-2.11 |
| 16 |
Hendrickson, Connor J (12)
|
WIASC |
48.41 |
47.64 |
-0.77 |
| 17 |
Bonis, Jonathon R (12)
|
WIEBSC |
49.92 |
53.46 |
3.54 |
| 18 |
Stanley, Lincoln K (11)
|
WIRA |
53.45 |
1:01.60 |
8.15 |
| 19 |
Witt, Nathan E (11)
|
WIRA |
54.89 |
1:02.05 |
7.16 |