| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Moy, Aiden C (16)
|
MRBAD |
51.70 |
51.62 |
-0.08 |
| 2 |
Jiang, Kevin (17)
|
MRBAD |
53.59 |
52.14 |
-1.45 |
| 3 |
Gonzalez, James (15)
|
MRAPEX |
55.14 |
54.68 |
-0.46 |
| 4 |
Rinaldi, Jack (17)
|
MRTRI |
53.71 |
55.32 |
1.61 |
| 5 |
Reed, Jack T (16)
|
MRTRI |
56.37 |
55.77 |
-0.60 |
| 6 |
Sherpa, Nuru (16)
|
MRLGAC |
56.37 |
55.96 |
-0.41 |
| 7 |
Shibalov, Vladimir K (18)
|
MRYFD |
56.27 |
57.22 |
0.95 |
| 8 |
Hussein, Yassin (17)
|
MRTRI |
58.54 |
57.35 |
-1.19 |
| 9 |
Kuo, Derrick J (16)
|
MRBAD |
58.87 |
58.81 |
-0.06 |
| 10 |
Wu, Matthew (15)
|
MRTRI |
58.83 |
59.02 |
0.19 |
| 11 |
Luczaj, Oscar (16)
|
MRLGAC |
59.44 |
59.63 |
0.19 |
| 12 |
Dauti, Klevis (16)
|
MRTRI |
|
1:00.92 |
- |
| 13 |
Pepper, Hudson M (17)
|
MRTRI |
1:00.90 |
1:01.22 |
0.32 |
| 14 |
Garcia Bory, Victor M (15)
|
MRYFD |
1:05.39 |
1:01.67 |
-3.72 |
| 15 |
Yang, Ryan Y (15)
|
MRYFD |
1:02.79 |
1:02.47 |
-0.32 |
| 16 |
Tuttle, Rana A (16)
|
MRYFD |
1:02.85 |
1:03.41 |
0.56 |
| 17 |
King, Anthony S (16)
|
MRHES |
1:04.34 |
1:04.32 |
-0.02 |
| 18 |
Jones, Josiah W (15)
|
MRHES |
1:14.23 |
1:10.37 |
-3.86 |
| 19 |
Williams, Mateu C (16)
|
MRBKR |
1:10.25 |
1:12.97 |
2.72 |
| 20 |
Yost, Robert J (17)
|
MRTRI |
1:30.99 |
1:13.18 |
-17.81 |
| 21 |
O'Dea, Dean C (15)
|
MRBKR |
1:21.39 |
1:15.52 |
-5.87 |