| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Kojanov, Daniil I (10)
|
PVNCAP |
42.40 |
41.37 |
-1.03 |
| 2 |
Komatsuzaki, Sebastian T (10)
|
PVNCAP |
44.17 |
42.79 |
-1.38 |
| 3 |
Lu, Andrew H (10)
|
PVNCAP |
43.90 |
43.89 |
-0.01 |
| 4 |
Joung, Joshua S (10)
|
PVJFD |
47.97 |
44.83 |
-3.14 |
| 5 |
Wong, Grady C (10)
|
PVJFD |
46.89 |
49.27 |
2.38 |
| 6 |
Xia, Andrew H (10)
|
PVJFD |
49.43 |
50.79 |
1.36 |
| 7 |
Nauvel, Thomas J (9)
|
PVDCPR |
54.38 |
52.75 |
-1.63 |
| 8 |
Dobson, William W (10)
|
MDGMAC |
56.17 |
53.23 |
-2.94 |
| 9 |
Peterson Arias, Ian A (10)
|
PVDCPR |
49.91 |
53.85 |
3.94 |
| 10 |
Badowski, Gavin M (10)
|
MDACSS |
51.82 |
54.30 |
2.48 |
| 11 |
Cabrera, Nicolas L (10)
|
PVDCPR |
58.71 |
55.58 |
-3.13 |
| 12 |
Gilbert, Steven T (10)
|
PVDCPR |
55.85 |
55.67 |
-0.18 |
| 13 |
Davis, Myles M (10)
|
PVDCPR |
54.18 |
58.27 |
4.09 |
| 14 |
Templeman, Brady L (9)
|
PVJFD |
|
1:00.59 |
- |
| 15 |
Walendowski, Ian A (9)
|
PVJFD |
1:05.05 |
1:00.82 |
-4.23 |
| 16 |
Harden, Colin J (9)
|
PVNCAP |
1:02.82 |
1:01.87 |
-0.95 |
| 17 |
Qureshi, Alexander J (10)
|
PVPAC |
|
1:17.51 |
- |
|
Rivero, Alexander C (10)
|
PVPAC |
|
DQ |
- |
|
Sheppard, Michael K (10)
|
PVPAC |
|
DQ |
- |
|
Pightling, Aziz I (9)
|
PVJFD |
|
DQ |
- |
|
Bowers, James L (9)
|
MDGMAC |
|
DQ |
- |
|
Dormitzer, Odin B (10)
|
PVDCPR |
1:00.56 |
DQ |
- |
|
Masiulis, Joseph C (9)
|
PVNCAP |
55.32 |
NS |
- |
|
Bloomquist, Mason D (10)
|
PVPAC |
56.25 |
NS |
- |
|
Emerine, Zachary K (10)
|
PVDCPR |
|
NS |
- |
|
Boyd, Mitchell R (9)
|
PVDCPR |
54.22 |
NS |
- |