| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
O'Connor, Ethan P (17)
|
NEBAY |
47.08 |
46.42 |
-0.66 |
| 2 |
Steen, Sam (15)
|
USWAHO |
47.78 |
49.25 |
1.47 |
| 3 |
Anderson, Blake E (16)
|
NEBAY |
49.56 |
51.21 |
1.65 |
| 4 |
Bagumyan, Gor A (18)
|
NEBAY |
50.56 |
51.69 |
1.13 |
| 5 |
Holmes, Michael (15)
|
NEGR |
52.69 |
51.93 |
-0.76 |
| 6 |
Arriagada, Gabriel I (17)
|
NEBAY |
53.41 |
51.98 |
-1.43 |
| 7 |
Bernat, Spencer G (17)
|
NEWEST |
52.27 |
52.55 |
0.28 |
| 8 |
Snow, Colby (15)
|
NEBAY |
59.16 |
55.12 |
-4.04 |
| 9 |
Donoghue, Patrick R (16)
|
NEAYT |
55.68 |
55.24 |
-0.44 |
| 10 |
Silveria, Chris (15)
|
NEBAY |
55.64 |
55.86 |
0.22 |
| 11 |
Assi, Brandon E (16)
|
NEBAY |
59.09 |
56.42 |
-2.67 |
| 12 |
Kosko, Nicholas K (15)
|
NESCY |
54.43 |
56.64 |
2.21 |
| 13 |
Hanley, Joshua (17)
|
NENEW |
59.99 |
1:00.02 |
0.03 |
| 14 |
Reese, Elliot (15)
|
CTMYST |
1:02.30 |
1:01.66 |
-0.64 |
| 15 |
Piccirilli, David A (15)
|
NEAYT |
1:03.05 |
1:04.53 |
1.48 |
| 16 |
Gibbons, Christopher M (17)
|
NEAYT |
1:18.22 |
1:18.46 |
0.24 |
| 17 |
McCabe, Jake (15)
|
NEOCY |
1:20.56 |
1:18.59 |
-1.97 |
| 18 |
Sawyer, Alex (15)
|
CTMYST |
1:23.05 |
1:22.82 |
-0.23 |
| 19 |
Barrack, Bobby (17)
|
NEOCY |
1:38.50 |
1:41.36 |
2.86 |