| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Pettit, Collin S (17)
|
MARAD |
55.75 |
55.34 |
-0.41 |
| 2 |
Byman, Sean J (17)
|
MRPAC |
55.94 |
56.21 |
0.27 |
| 3 |
Allen, Liam F (15)
|
MRPAC |
53.17 |
56.29 |
3.12 |
| 4 |
Gray, Matthew J (14)
|
MARAD |
57.00 |
56.47 |
-0.53 |
| 5 |
Gray, Stephen F (17)
|
MRWEST |
59.09 |
56.48 |
-2.61 |
| 6 |
Cho, Edward (15)
|
MRPAC |
56.99 |
57.43 |
0.44 |
| 7 |
Rose, Benjamin W (16)
|
MRUN |
57.85 |
59.12 |
1.27 |
| 8 |
Jun, Yongchan D (17)
|
MRUN |
58.67 |
59.64 |
0.97 |
| 9 |
Mlodzienski, Nicholas J (16)
|
MARAD |
1:00.99 |
59.68 |
-1.31 |
| 10 |
Choe, Ha Young A (12)
|
NJWAVE |
1:04.69 |
1:00.45 |
-4.24 |
| 11 |
Stangeby, Jon-Christian (16)
|
MRPAC |
59.91 |
1:00.68 |
0.77 |
| 12 |
Griffenkranz, Sean M (18)
|
MRPAC |
1:00.09 |
1:00.84 |
0.75 |
| 13 |
Gamboli, Luke A (17)
|
MRPAC |
1:00.99 |
1:01.49 |
0.50 |
| 14 |
Fan, Maximilian (16)
|
MRMAKO |
1:01.55 |
1:01.61 |
0.06 |
| 15 |
Branigan, Carter J (15)
|
MARAD |
58.44 |
1:01.63 |
3.19 |
| 16 |
Ng, Dylan (16)
|
MRMAKO |
1:01.75 |
1:02.16 |
0.41 |
| 17 |
Epes, Christopher R (17)
|
MRGAEL |
1:03.42 |
1:02.89 |
-0.53 |
| 18 |
Steininger, Aramis J (17)
|
MRMAKO |
1:03.07 |
1:02.91 |
-0.16 |
| 19 |
Lambert, Riley P (16)
|
MRUN |
1:10.66 |
1:02.94 |
-7.72 |
| 20 |
Syphers, David C (17)
|
MRGAEL |
1:02.56 |
1:03.42 |
0.86 |
| 21 |
Maretic, Matt A (17)
|
MRPAC |
1:03.99 |
1:03.88 |
-0.11 |
| 22 |
Gordinier, Peter, Jr. T (17)
|
MRPAC |
1:07.03 |
1:04.00 |
-3.03 |
| 23 |
Lee, Eric J (11)
|
NJWAVE |
1:03.26 |
1:04.04 |
0.78 |
| 24 |
Gusita, Nicholas (15)
|
MRRIST |
1:04.02 |
1:04.44 |
0.42 |
| 25 |
Anstadt, Nick J (17)
|
MARAD |
1:04.83 |
1:04.72 |
-0.11 |
| 26 |
Euyoque, Kevin D (12)
|
MRWEST |
1:11.18 |
1:09.99 |
-1.19 |