| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Frantum, Faith A (12)
|
IACIA |
20:46.89 |
17:47.25 |
-179.64 |
| 2 |
Huss, Anna F (12)
|
IACIA |
19:16.06 |
18:50.60 |
-25.46 |
| 3 |
Gerke, Gretchen L (11)
|
IAIFLY |
19:37.99 |
18:59.87 |
-38.12 |
| 4 |
Zimmer, Coral V (12)
|
IADMSF |
19:33.86 |
19:19.37 |
-14.49 |
| 5 |
Mullin, Sophia R (12)
|
IAEISF |
20:22.85 |
19:19.86 |
-62.99 |
| 6 |
Woolums, Brynnly E (11)
|
IARSC |
19:49.54 |
19:28.96 |
-20.58 |
| 7 |
Snakenberg, Riley M (12)
|
IAACAC |
20:44.10 |
20:15.41 |
-28.69 |
| 8 |
Smith, Myah J (12)
|
IAACAC |
21:09.83 |
20:46.71 |
-23.12 |
| 9 |
Halaczkiewicz, Emilia A (11)
|
IARIP |
21:04.26 |
20:54.24 |
-10.02 |
| 10 |
Light, Jaylyn J (11)
|
IAACAC |
22:26.94 |
21:02.25 |
-84.69 |
| 11 |
Telisak, Isabella M (11)
|
IAEISF |
21:19.11 |
21:10.38 |
-8.73 |
| 12 |
Huffman, Laurel O (11)
|
IALMST |
22:39.04 |
21:28.73 |
-70.31 |
| 13 |
Ostermeier, Lillian T (11)
|
IAACAC |
21:44.87 |
21:51.81 |
6.94 |
| 14 |
Daniel, Addison K (12)
|
IAACAC |
22:22.11 |
22:13.91 |
-8.20 |
| 15 |
Hanson, Suriana R (12)
|
IAACAC |
22:24.84 |
22:24.23 |
-0.61 |
| 16 |
Kloster, Charlie S (12)
|
IARSC |
22:22.21 |
23:10.68 |
48.47 |
|
Smith, Maysen L (12)
|
IAACAC |
21:17.74 |
DQ |
- |