| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Bablin, Matthew J (11)
|
ADBSPA |
42.92 |
39.73 |
-3.19 |
| 2 |
Baird, Calvin M (12)
|
ADSCHE |
40.82 |
40.99 |
0.17 |
| 3 |
Stelling, Payton J (12)
|
ADUN |
41.61 |
42.38 |
0.77 |
| 4 |
Baird, Connor S (12)
|
ADSCHE |
41.42 |
42.69 |
1.27 |
| 5 |
Martin, Wyatt R (12)
|
ADSCHE |
42.12 |
43.74 |
1.62 |
| 6 |
Sunderland, Kurt P (12)
|
ADCANA |
48.06 |
44.33 |
-3.73 |
| 7 |
Miller, Brian J (12)
|
ADSSCY |
42.68 |
45.28 |
2.60 |
| 8 |
Ernst, Noah R (12)
|
ADSARY |
46.17 |
46.07 |
-0.10 |
| 9 |
Sheng, Denny (11)
|
ADSARY |
49.21 |
49.77 |
0.56 |
| 10 |
Nacheman, Zachary J (11)
|
ADSARY |
55.46 |
57.70 |
2.24 |
| 11 |
Vozzy, Anthony G (11)
|
ADSSCY |
1:01.59 |
58.57 |
-3.02 |
|
Katusha, Alex J (11)
|
ADSARY |
1:00.90 |
DQ |
- |
|
Allison, Louis (11)
|
ADGRGF |
1:10.40 |
DQ |
- |
|
Srokowski, Nicholas A (12)
|
ADBSPA |
39.84 |
DQ |
- |
|
VanGuilder, Christian J (11)
|
ADGLFY |
54.80 |
DQ |
- |
|
Hussey, Flynn E (12)
|
ADSCHE |
47.49 |
DQ |
- |
|
Rath, Carson G (11)
|
ADGLFY |
46.56 |
DQ |
- |
|
Hegeman, Ronan D (12)
|
ADUN |
|
DQ |
- |
|
Cronin, Shane T (12)
|
ADCPP |
1:01.20 |
NS |
- |
|
Marcotullio, Ryan P (12)
|
ADADDI |
46.50 |
NS |
- |
|
Walsh, Andrew R (11)
|
ADSCHE |
50.13 |
NS |
- |
|
Michalek, Sean G (11)
|
ADCPP |
1:01.19 |
NS |
- |