| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Lam, Kylie L (12)
|
MRQNS |
42.41 |
40.30 |
-2.11 |
| 2 |
Harkins, Morgan P (12)
|
MRLIE |
48.47 |
43.35 |
-5.12 |
| 3 |
Cagno, Lucia P (12)
|
MRQNS |
45.18 |
44.63 |
-0.55 |
| 4 |
Akmatbaeva, Deniz (12)
|
MRQNS |
44.59 |
44.67 |
0.08 |
| 5 |
Kang, Sunny (11)
|
MRWEST |
49.70 |
44.74 |
-4.96 |
| 6 |
Hunter, Madeleine J (11)
|
MRLIE |
52.61 |
45.59 |
-7.02 |
| 7 |
LaLota, Maggie R (11)
|
MRWISC |
46.02 |
46.70 |
0.68 |
| 8 |
Brodsky, Aliyah R (11)
|
MRLIE |
|
47.01 |
- |
| 9 |
Borowski, Elaina (11)
|
MRCSDC |
49.71 |
47.94 |
-1.77 |
| 10 |
Singh, Chloe M (11)
|
MRSSC |
48.39 |
48.36 |
-0.03 |
| 11 |
Ali, Katina L (12)
|
MRWISC |
51.01 |
49.80 |
-1.21 |
| 12 |
O'Sullivan, Brinan K (11)
|
MRQNS |
53.27 |
50.54 |
-2.73 |
| 13 |
Vardoulias, Sofia (12)
|
MRLIE |
58.87 |
50.66 |
-8.21 |
| 14 |
Lemaitre, Nina J (11)
|
MRLIE |
|
50.82 |
- |
| 15 |
Walsh, Julianne L (11)
|
MRLIE |
|
52.06 |
- |
| 16 |
Canon, Sophia H (12)
|
MRLIE |
|
52.29 |
- |
| 17 |
McKiernan, Taryn (11)
|
MRCSDC |
|
52.62 |
- |
| 18 |
Colletti, Sofia (12)
|
MRLIE |
59.47 |
52.72 |
-6.75 |
| 19 |
Garra, Isabella G (12)
|
MRLIE |
1:06.50 |
56.36 |
-10.14 |
| 20 |
Mongello, Catherine A (12)
|
MRLIE |
|
56.98 |
- |
| 21 |
Colletti, Claire J (12)
|
MRLIE |
1:03.06 |
1:00.19 |
-2.87 |
| 22 |
Azzollini, Elisabeth H (11)
|
MRCSDC |
|
1:04.15 |
- |
| 23 |
McShane, Mollie E (11)
|
MRLIE |
|
1:11.92 |
- |
| 24 |
Raut, Jiuika M (12)
|
MRLIE |
|
1:15.38 |
- |
|
Clarke, Hailey E (12)
|
MRLIE |
|
DQ |
- |