| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Montgomery, Bridget M (15)
|
MRQNS |
18:02.94 |
18:55.07 |
52.13 |
| 2 |
Petersson, Kirsten A (16)
|
MRSMC |
19:04.80 |
19:23.82 |
19.02 |
| 3 |
Edwards, Madison (13)
|
MRSMC |
19:21.71 |
19:44.85 |
23.14 |
| 4 |
Luongo, Maya (13)
|
MRSMC |
19:53.49 |
20:16.82 |
23.33 |
| 5 |
Ashikari, Emily (16)
|
MRSMC |
19:05.56 |
20:16.89 |
71.33 |
| 6 |
Reilly, Courtney (14)
|
MRSMC |
20:22.06 |
20:39.10 |
17.04 |
| 7 |
Kozma, Blanka (17)
|
MRYMID |
20:11.62 |
20:39.80 |
28.18 |
| 8 |
Ehnes, Symantha A (14)
|
MRSMC |
20:22.19 |
21:08.62 |
46.43 |
| 9 |
Mejia, Stephani (13)
|
MRYMID |
21:46.95 |
21:38.43 |
-8.52 |
| 10 |
Byrd, Christine E (14)
|
MRYMID |
20:58.61 |
21:46.37 |
47.76 |
| 11 |
Lopez, Ariana M (15)
|
MRYMID |
21:07.14 |
22:07.82 |
60.68 |
| 12 |
Byrd, Laura C (17)
|
MRYMID |
21:30.46 |
22:24.29 |
53.83 |
| 13 |
Laurenceau, Alyssa M (14)
|
MRYMID |
23:33.56 |
23:08.00 |
-25.56 |
| 14 |
Chia, Molly (14)
|
MRYMID |
|
23:20.15 |
- |
| 15 |
Smith, Caroline K (13)
|
MRYMID |
|
23:28.08 |
- |
| 16 |
Belmar, Ayanna F (15)
|
MRYMID |
25:29.96 |
24:44.65 |
-45.31 |
| 17 |
Daniel, Alexis (16)
|
MRYMID |
24:10.02 |
25:08.18 |
58.16 |
|
Malandrino, Samantha M (17)
|
MRYMID |
|
DQ |
- |