| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Lin, Christopher T (10)
|
FGPCS |
39.39 |
39.42 |
0.03 |
| 2 |
Gehring, Quinn C (10)
|
FGBRST |
41.39 |
39.73 |
-1.66 |
| 3 |
Linares, Lucas (9)
|
FGSFTL |
48.22 |
43.38 |
-4.84 |
| 4 |
Sauvage, Oliver (10)
|
FGSFTL |
43.96 |
45.20 |
1.24 |
| 5 |
Carey, Connor I (10)
|
FGSFTL |
46.79 |
46.04 |
-0.75 |
| 6 |
Ozaktay, Levent L (9)
|
FGPCS |
1:03.23 |
46.27 |
-16.96 |
| 7 |
Santos, Kevin T (10)
|
FGPCS |
45.65 |
46.85 |
1.20 |
| 8 |
Le-Vega, Jordan (10)
|
FGMS |
|
47.59 |
- |
| 9 |
Bonini, Pietro (8)
|
FGMS |
|
48.02 |
- |
| 10 |
Rosenthal, Frederick B (10)
|
FGPCS |
47.97 |
49.16 |
1.19 |
| 11 |
McClaine, Brody T (10)
|
FGPCS |
55.96 |
49.30 |
-6.66 |
| 12 |
Krasnov, Robert J (8)
|
FGPCS |
|
49.87 |
- |
| 13 |
Bass, Alistair J (8)
|
FGSFTL |
48.89 |
49.91 |
1.02 |
| 14 |
Gillis, William J (10)
|
FGBRST |
51.31 |
50.52 |
-0.79 |
| 15 |
Olive, Emerson L (7)
|
FGPCS |
55.86 |
52.51 |
-3.35 |
| 16 |
Warner, Christopher C (8)
|
FGPCS |
56.68 |
52.79 |
-3.89 |
| 17 |
Paden, Joseph I (9)
|
FGPCS |
52.81 |
52.95 |
0.14 |
| 18 |
Johnson, Zachary P (9)
|
FGPCS |
52.62 |
53.71 |
1.09 |
| 19 |
Yoffe, Daniel (9)
|
FGPCS |
|
54.67 |
- |
| 20 |
Vetancourt, Alec F (8)
|
FGPCS |
|
57.26 |
- |
| 21 |
Ramirez, William (9)
|
FGMS |
|
1:07.61 |
- |
|
Cisternas-Acho, Maximiliano (10)
|
FGBRST |
|
DQ |
- |
|
Lajko, Andreas L (8)
|
FGSFTL |
43.93 |
DQ |
- |
|
Mantilla, Thiago (10)
|
FGMS |
|
DQ |
- |