| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
O'Neil, Rylee A (17)
|
MTBAC |
18:06.89 |
18:09.94 |
3.05 |
| 2 |
Bono, Isabella C (15)
|
PNWAVE |
18:39.63 |
18:42.41 |
2.78 |
| 3 |
O'Neil, Sydnee E (14)
|
MTBAC |
18:45.77 |
18:46.09 |
0.32 |
| 4 |
Carey, Lexi J (13)
|
MTBAC |
19:31.79 |
18:51.23 |
-40.56 |
| 5 |
McCormick, Caroline R (18)
|
MTMYST |
18:52.13 |
19:22.87 |
30.74 |
| 6 |
Seagrave, Isabella R (17)
|
MTMAC |
18:59.69 |
19:37.79 |
38.10 |
| 7 |
Mittelsteadt, Annika M (14)
|
MTBOZ |
19:23.87 |
19:40.68 |
16.81 |
| 8 |
Muhlfeld, Madeline R (14)
|
MTKATS |
22:37.33 |
19:42.38 |
-174.95 |
| 9 |
Johnson, Hailey (14)
|
MTBAC |
19:41.68 |
19:47.69 |
6.01 |
| 10 |
Lax, Kihla A (15)
|
MTMAC |
20:20.62 |
20:11.68 |
-8.94 |
| 11 |
Tininenko, Kylie R (15)
|
MTBAC |
22:30.76 |
20:22.01 |
-128.75 |
| 12 |
Sullivan, Annie M (17)
|
MTWRSC |
19:57.75 |
20:22.55 |
24.80 |
| 13 |
Kimborowicz, Jenna N (13)
|
PNWAVE |
20:16.98 |
21:04.25 |
47.27 |
| 14 |
Palmer, Jordan T (17)
|
UTPSC |
20:25.73 |
21:08.97 |
43.24 |
| 15 |
Brennan, Madeleine L (14)
|
UTSLSL |
22:29.78 |
21:09.93 |
-79.85 |
| 16 |
Wippert, Jaycie H (13)
|
MTBAC |
21:39.15 |
21:16.18 |
-22.97 |
| 17 |
Brenneman, Olivia K (17)
|
UTSLSL |
20:47.00 |
21:36.38 |
49.38 |
| 18 |
Thomson, Tyree N (17)
|
SRMVM |
21:55.07 |
21:46.97 |
-8.10 |
| 19 |
Thomson, Gretchen C (18)
|
SRMVM |
22:34.83 |
21:50.57 |
-44.26 |
| 20 |
Cluff, Lillian E (14)
|
SRMVM |
22:21.44 |
22:18.08 |
-3.36 |
| 21 |
Wandler, Grace M (13)
|
MTMAC |
21:14.67 |
22:53.86 |
99.19 |
| 22 |
Boylan, Eliana P (18)
|
MTMYST |
22:15.33 |
23:18.67 |
63.34 |
| 23 |
Goddard, Eve C (13)
|
UTSLSL |
23:59.44 |
23:19.85 |
-39.59 |
| 24 |
Fastnow, Quinn A (13)
|
MTBMA |
23:27.56 |
24:08.21 |
40.65 |
| 25 |
Dey, Skyler M (15)
|
UTSLSL |
22:44.48 |
24:53.64 |
129.16 |