| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Jansen, Holly E (15)
|
PVPM |
1:12.42 |
1:12.30 |
-0.12 |
| 2 |
Hart, Carly C (16)
|
LEFAST |
1:12.38 |
1:12.35 |
-0.03 |
| 3 |
Schreiber, Sheridan C (15)
|
GASA |
1:12.00 |
1:12.58 |
0.58 |
| 4 |
Korenwinder, Mallory A (17)
|
CCTNT |
1:11.56 |
1:12.73 |
1.17 |
| 5 |
Lindsay, Mariah (16)
|
PNKING |
1:13.21 |
1:13.01 |
-0.20 |
| 6 |
Dupay, Meghan K (17)
|
NCMAC |
1:12.63 |
1:13.63 |
1.00 |
| 7 |
Waldum, Annie G (17)
|
WYGST |
1:13.48 |
1:13.75 |
0.27 |
| 8 |
Yancy, Alyson M (15)
|
AZSAC |
1:13.90 |
1:13.76 |
-0.14 |
| 9 |
Ting, Stefanie S (16)
|
PCSCSC |
1:12.23 |
1:13.87 |
1.64 |
| 10 |
Wood, Lauren M (18)
|
CATMEC |
1:13.41 |
1:14.14 |
0.73 |
| 11 |
Johnson, Jane T (16)
|
GASA |
1:15.00 |
1:15.10 |
0.10 |