| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
McDonald, Mary J (12)
|
MRLIAC |
3:10.94 |
3:06.41 |
-4.53 |
| 2 |
Gerosa, Grace H (11)
|
MRBGNW |
3:12.63 |
3:08.53 |
-4.10 |
| 3 |
Lee, Cherry (11)
|
MRLIAC |
3:16.19 |
3:10.24 |
-5.95 |
| 4 |
Reeder, Evelyn A (12)
|
MDHFY |
3:14.19 |
3:11.55 |
-2.64 |
| 5 |
Nam, Lauren (12)
|
MRLIAC |
3:17.65 |
3:11.82 |
-5.83 |
| 6 |
Petriccione, Melania C (12)
|
MRRA |
3:23.48 |
3:12.11 |
-11.37 |
| 7 |
Lee, Elena G (12)
|
MDEST |
3:13.09 |
3:12.53 |
-0.56 |
| 8 |
Wood, Aria R (12)
|
MDCAC |
3:23.86 |
3:14.57 |
-9.29 |
| 9 |
Rinker, Adrienne G (12)
|
MDEST |
3:26.05 |
3:21.36 |
-4.69 |
| 10 |
Whiteman, Iris M (11)
|
MDSPRC |
3:22.76 |
3:21.56 |
-1.20 |
| 11 |
Hu, Caroline (12)
|
MRLIAC |
3:32.55 |
3:25.64 |
-6.91 |
| 12 |
Pingaro, Regen O (11)
|
MDCAA |
3:33.30 |
3:26.43 |
-6.87 |
| 13 |
Birdsall, Caroline R (12)
|
MDEST |
3:32.68 |
3:27.27 |
-5.41 |
| 14 |
Lam, Kuipi (12)
|
MRLIAC |
3:29.97 |
3:27.32 |
-2.65 |
| 15 |
Kearney, Sophia C (11)
|
MRLIAC |
3:33.98 |
3:28.75 |
-5.23 |