| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Braun, Elle (17)
|
MAUDAC |
18:01.77 |
18:03.94 |
2.17 |
| 2 |
Doucette, Megan J (16)
|
MASCAY |
19:05.18 |
18:51.79 |
-13.39 |
| 3 |
Bair, Camryn N (12)
|
MANLAC |
19:18.96 |
19:14.38 |
-4.58 |
| 4 |
Gugino, LilyAnn G (13)
|
MANLAC |
18:47.88 |
19:22.81 |
34.93 |
| 5 |
Scudder, Kiera V (17)
|
MAMSA |
19:57.58 |
19:38.79 |
-18.79 |
| 6 |
Pryshchenko, Katya A (16)
|
MAMSA |
20:22.57 |
19:51.36 |
-31.21 |
| 7 |
Forman, Faith K (16)
|
MALAC |
20:49.83 |
19:57.84 |
-51.99 |
| 8 |
Friedlander, Ellie S (14)
|
MALAC |
19:36.20 |
20:13.89 |
37.69 |
| 9 |
Turner Havira, Olivia M (15)
|
MABDA |
20:20.22 |
20:21.18 |
0.96 |
| 10 |
Taylor, Emily M (14)
|
MALAC |
|
20:31.50 |
- |
| 11 |
Testa, Joey A (15)
|
AMUN-1 |
21:47.40 |
20:53.82 |
-53.58 |
| 12 |
Charles, Sarah L (16)
|
MALAC |
|
21:00.46 |
- |
| 13 |
Martin, Lauren G (14)
|
NISDSC |
|
21:07.72 |
- |
| 14 |
Hooper, Kaitlin A (13)
|
MANLAC |
20:56.17 |
21:10.44 |
14.27 |
| 15 |
Packer, Katelyn E (13)
|
MANLAC |
21:11.70 |
21:19.54 |
7.84 |
| 16 |
Kellner, Gabriella H (12)
|
MACBST |
|
21:19.74 |
- |
| 17 |
Bertolotti, Adriana E (15)
|
MAMSA |
21:59.66 |
21:25.44 |
-34.22 |
| 18 |
Newton, Taylor (16)
|
MABDA |
20:14.45 |
21:27.85 |
73.40 |
| 19 |
Forgione, Ava R (14)
|
MABDA |
22:34.84 |
21:54.31 |
-40.53 |
| 20 |
Schofield, Carly (14)
|
MABDA |
22:51.51 |
23:25.90 |
34.39 |