| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Calvo, Joshua J (10)
|
FGDRSC |
42.66 |
43.43 |
0.77 |
| 2 |
Sullivan, Ethan M (10)
|
FGMSA |
46.02 |
44.93 |
-1.09 |
| 3 |
Natino, Joseph-Blake (8)
|
FGSOFL |
47.19 |
47.52 |
0.33 |
| 4 |
Calvo, Joel J (8)
|
FGDRSC |
49.78 |
48.00 |
-1.78 |
| 5 |
Grenier, Michael * (9)
|
FGCANE |
|
48.49 |
- |
| 6 |
Castillo, Axel T (10)
|
FGMACM |
58.27 |
51.07 |
-7.20 |
| 7 |
Fanjul, Maximo A (10)
|
FGCANE |
52.92 |
51.93 |
-0.99 |
| 8 |
De La Cruz, Santana M (9)
|
FGNMST |
1:03.98 |
58.25 |
-5.73 |
| 9 |
Prasad, Aryan (10)
|
FGFFSC |
|
58.29 |
- |
| 10 |
Rios, Brandon A (10)
|
FGSOFL |
58.71 |
58.57 |
-0.14 |
| 11 |
Palacios, Francesco (10)
|
FGMACM |
51.72 |
59.30 |
7.58 |
| 12 |
Laurentys, Lorenzo Z (10)
|
FGSOFL |
1:01.41 |
59.85 |
-1.56 |
| 13 |
Watson, Ross L (10)
|
FGMCDA |
|
1:00.23 |
- |
| 14 |
Fanjul, Benjamin G (8)
|
FGCANE |
1:04.01 |
1:01.38 |
-2.63 |
| 15 |
Diener, Seth D (10)
|
FGMCDA |
|
1:02.20 |
- |
| 16 |
Moya, Kevin (10)
|
FGSOFL |
52.50 |
1:08.78 |
16.28 |
| 17 |
Edgerton, Christopher (10)
|
FGDRSC |
|
1:11.19 |
- |
| 18 |
Petkov, Martin M (8)
|
FGSOFL |
1:03.02 |
1:12.11 |
9.09 |
| 19 |
Pedraja, William G (8)
|
FGCANE |
1:14.81 |
1:13.84 |
-0.97 |
| 20 |
Puelles, Marcelo S (9)
|
FGNMST |
|
1:23.75 |
- |
|
Sparling, Benjamin (10)
|
FGSGST |
|
DQ |
- |
|
Tang, Jason (9)
|
FGSGST |
|
NS |
- |
|
Kolotov, Konesantin * (9)
|
FGMCDA |
58.69 |
NS |
- |
|
Carbonell, Riley R (9)
|
FGMACM |
55.49 |
NS |
- |