| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Tatakis, Jesse J (15)
|
AKAST |
56.06 |
55.66 |
-0.40 |
| 2 |
Pendlebury, John S (17)
|
SRVOLT |
54.95 |
56.17 |
1.22 |
| 3 |
Maggiora, Daniel K (18)
|
ORRACE |
55.60 |
56.37 |
0.77 |
| 4 |
Choi, Suyoun (15)
|
ORTHSC |
55.84 |
56.44 |
0.60 |
| 5 |
Blackstone, James M (14)
|
AKCAC |
57.54 |
57.60 |
0.06 |
| 6 |
Drew, James R (16)
|
PNTAC |
55.47 |
59.22 |
3.75 |
| 7 |
Heusted, Alyssa K (14)
|
PNGAC |
1:01.27 |
1:01.32 |
0.05 |
| 8 |
Levan, Siena S (14)
|
PNBISC |
1:02.27 |
1:01.44 |
-0.83 |
| 9 |
Konop, Ryan P (13)
|
ORRACE |
1:00.57 |
1:02.69 |
2.12 |
| 10 |
Bohms, Jordan R (17)
|
ORFGSC |
1:02.92 |
1:03.49 |
0.57 |
| 11 |
Robinson-Kim, Abigail R (13)
|
WYSWAT |
1:03.59 |
1:05.53 |
1.94 |
| 12 |
Schachle, Victoria L (15)
|
AKSST |
1:11.05 |
1:07.28 |
-3.77 |
| 13 |
Munoz, Lillian A (13)
|
WYSWAT |
1:08.01 |
1:11.09 |
3.08 |
| 14 |
Segerson, Samantha J (10)
|
PNBISC |
1:16.00 |
1:14.26 |
-1.74 |
| 15 |
Vail, Alex W (10)
|
ORLOSC |
1:21.00 |
1:23.92 |
2.92 |