| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Ivanov, Katya A (10)
|
NJBAC |
43.10 |
42.40 |
-0.70 |
| 2 |
Pennetti, Lianna F (10)
|
NJBAC |
42.83 |
43.84 |
1.01 |
| 3 |
Radomsky, Maya A (10)
|
NJHQH |
44.49 |
44.01 |
-0.48 |
| 4 |
Flanigan, Kathryn S (9)
|
NJBAC |
47.90 |
47.12 |
-0.78 |
| 5 |
Formon, Nicola T (7)
|
NJBAC |
47.28 |
49.98 |
2.70 |
| 6 |
Cosgrove, Scarlett J (10)
|
NJBAC |
52.61 |
50.16 |
-2.45 |
| 7 |
McGoldrick, Riley J (9)
|
NJBAC |
50.14 |
50.46 |
0.32 |
| 8 |
Zwally, Ann F (9)
|
NJBAC |
51.66 |
52.28 |
0.62 |
| 9 |
Mayer, Kayra D (9)
|
NJBAC |
53.81 |
52.37 |
-1.44 |
| 10 |
Callahan, Gillian P (9)
|
NJBAC |
53.20 |
52.80 |
-0.40 |
| 11 |
Yoon, JooHee (9)
|
NJACE |
1:00.00 |
55.56 |
-4.44 |
| 12 |
Kim, Seoyeon (10)
|
NJBMA |
1:09.55 |
57.16 |
-12.39 |
| 13 |
Donaldson, Dominique R (9)
|
NJBAC |
1:00.60 |
57.68 |
-2.92 |
| 14 |
Rhi, Abigail (8)
|
NJACE |
55.00 |
58.74 |
3.74 |
| 15 |
Woo, Rachel J (7)
|
NJACE |
54.99 |
59.51 |
4.52 |
|
Jones, Sekai n (10)
|
NJBAC |
59.63 |
NS |
- |