| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Rongione, Natalia D (14)
|
PVFISH |
17:45.10 |
17:34.69 |
-10.41 |
| 2 |
Soubier, Rachel C (13)
|
PVRMSC |
18:08.88 |
17:35.40 |
-33.48 |
| 3 |
Wallace, Taylor O (14)
|
PVRMSC |
18:40.01 |
17:55.35 |
-44.66 |
| 4 |
Sies, Taylor E (14)
|
MADST |
17:39.22 |
17:55.88 |
16.66 |
| 5 |
Cleal, Lilly M (14)
|
PVRMSC |
18:16.69 |
18:00.99 |
-15.70 |
| 6 |
O'Shaughnessy, Bridget E (13)
|
PVFISH |
18:14.14 |
18:01.73 |
-12.41 |
| 7 |
Kincaid, Colleen M (14)
|
PVRMSC |
18:56.72 |
18:03.84 |
-52.88 |
| 8 |
Szerencsits, Olivia S (13)
|
MAPAAC |
18:29.45 |
18:19.40 |
-10.05 |
| 9 |
Ceely, Kiera A (14)
|
PVRMSC |
18:25.21 |
18:20.82 |
-4.39 |
| 10 |
Dean, Selah G (14)
|
PVFISH |
18:12.21 |
18:26.56 |
14.35 |
| 11 |
Kalish, Lindsay P (13)
|
MADST |
19:36.37 |
18:31.79 |
-64.58 |
| 12 |
Vinal, Madeline G (14)
|
PVASA |
18:43.70 |
18:48.54 |
4.84 |
| 13 |
Dorsey, Emma M (14)
|
PVRMSC |
19:31.43 |
19:13.02 |
-18.41 |