| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Civerolo, Zackary (10)
|
ADUN |
46.81 |
45.44 |
-1.37 |
| 2 |
Splonskowski, Brendan J (10)
|
ADKCC |
46.34 |
45.90 |
-0.44 |
| 3 |
Otten, Ryan J (10)
|
ADBSPA |
47.74 |
46.83 |
-0.91 |
| 4 |
Novikov, Daniel A (9)
|
ADKCC |
46.16 |
47.89 |
1.73 |
| 5 |
Robinson, Samuel J (10)
|
ADCANA |
55.51 |
49.77 |
-5.74 |
| 6 |
Jenkins, Levi R (9)
|
ADBSPA |
50.01 |
50.95 |
0.94 |
| 7 |
Demare, Vincent P (10)
|
ADCPP |
48.46 |
50.97 |
2.51 |
| 8 |
Vanarman, Chase S (10)
|
ADWAVE |
53.25 |
52.91 |
-0.34 |
| 9 |
Carroll, Luke J (10)
|
ADUN |
55.46 |
57.24 |
1.78 |
| 10 |
Luley, Troy J (9)
|
ADCLIN |
1:12.11 |
58.22 |
-13.89 |
| 11 |
Harding, Daren C (9)
|
ADCANA |
1:02.99 |
58.47 |
-4.52 |
| 12 |
Upton, Matthew T (10)
|
ADCPP |
58.63 |
1:01.90 |
3.27 |
| 13 |
Vale de Gato, Baltazar F (10)
|
ADCLIN |
1:12.53 |
1:02.81 |
-9.72 |
| 14 |
Shaw, Aidan X (10)
|
ADGRGF |
1:07.03 |
1:10.14 |
3.11 |
|
Hill, Nathaniel J (9)
|
ADCPP |
55.06 |
DQ |
- |
|
Reichl, Dylan (10)
|
ADKCC |
51.01 |
DQ |
- |
|
Eustaquio, Emilio Jared J (9)
|
ADAMST |
1:26.50 |
DQ |
- |
|
Morgan, Finn E (10)
|
ADCLRK |
49.47 |
NS |
- |