| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Brandt, Mackenzie A (13)
|
MASSC |
|
18:05.83 |
- |
| 2 |
Levensten, Kate E (13)
|
MASSC |
20:40.66 |
20:14.99 |
-25.67 |
| 3 |
Cappola, Christina M (14)
|
MASSC |
20:25.20 |
20:41.71 |
16.51 |
| 4 |
Hayes, Brigid M (14)
|
MANSC |
|
20:58.37 |
- |
| 5 |
Krieg, Sylvia C (13)
|
MASSC |
|
21:13.06 |
- |
| 6 |
Johnson, Anna K (12)
|
MASSC |
|
21:14.27 |
- |
| 7 |
Wolfe, Ella V (12)
|
MAMARA |
|
21:15.83 |
- |
| 8 |
Mitchell, Victoria S (12)
|
MASSC |
|
21:15.89 |
- |
| 9 |
Steinmetz, Zoe N (12)
|
MANSC |
|
21:18.16 |
- |
| 10 |
Levensten, Sydney J (13)
|
MASSC |
21:18.49 |
21:21.18 |
2.69 |
| 11 |
Schweigert, Caroline E (12)
|
MAMARA |
|
21:58.39 |
- |
| 12 |
Tomochek, Mia G (13)
|
MASTRM |
|
25:48.76 |
- |
| 13 |
Rauscher, Alyssa E (13)
|
MASTRM |
|
27:32.03 |
- |