| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Phelps, Anna E (11)
|
MAPWAC |
18:28.31 |
18:07.34 |
-20.97 |
| 2 |
Testa, Madison N (12)
|
MAUN-2 |
18:36.43 |
18:51.24 |
14.81 |
| 3 |
King, Avery O (12)
|
MAEMAC |
18:56.16 |
18:52.20 |
-3.96 |
| 4 |
Littler, Alicia (12)
|
MAWCAY |
19:22.29 |
19:02.41 |
-19.88 |
| 5 |
Shoemaker, Jennifer E (12)
|
MAWSY |
19:18.33 |
19:13.90 |
-4.43 |
| 6 |
Sergent, Brooke D (11)
|
MAPAAC |
19:59.66 |
19:26.76 |
-32.90 |
| 7 |
Petrakis, Nyah M (12)
|
MACBST |
19:57.11 |
19:36.92 |
-20.19 |
| 8 |
Calder, Ella C (12)
|
MAYY |
20:13.60 |
19:39.51 |
-34.09 |
| 9 |
Pillar, Claire E (11)
|
MAFCA |
20:59.63 |
19:58.75 |
-60.88 |
| 10 |
Lett, Lindsey E (11)
|
MAGPAC |
20:55.63 |
19:59.16 |
-56.47 |
| 11 |
Raser, Emma F (11)
|
MANPAC |
19:56.36 |
20:05.30 |
8.94 |
| 12 |
Tassinari, Marianne E (11)
|
MAPFY |
21:22.01 |
20:09.55 |
-72.46 |
| 13 |
Naveen, Annika (12)
|
MAFCA |
20:13.93 |
20:21.69 |
7.76 |
| 14 |
Walters, Ava M (11)
|
MAPWAC |
20:37.00 |
20:22.88 |
-14.12 |
| 15 |
Defrehn, Alexandra L (11)
|
MAGPAC |
21:20.23 |
20:26.39 |
-53.84 |
| 16 |
Carl, Mary A (11)
|
MABYNS |
20:50.84 |
20:26.95 |
-23.89 |
| 17 |
Walls, Jillian Y (12)
|
MAPAAC |
20:56.91 |
20:32.04 |
-24.87 |
| 18 |
Rossi, Isabella M (11)
|
MAUN-0 |
21:24.46 |
20:34.50 |
-49.96 |
| 19 |
Coonley, Campbell P (12)
|
MARAD |
21:04.36 |
20:38.92 |
-25.44 |
| 20 |
McCarthy, Danielle R (12)
|
MAGPAC |
20:37.62 |
20:45.49 |
7.87 |
| 21 |
Danastasio, Giovanna M (12)
|
MAWAVE |
21:04.18 |
20:46.00 |
-18.18 |
| 22 |
Morris, Chloe R (12)
|
MAGPAC |
21:01.06 |
21:01.02 |
-0.04 |
| 23 |
Cella, Olivia (11)
|
MARAD |
21:04.22 |
21:02.18 |
-2.04 |