| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Coe, Angela A (15)
|
ILHEAT |
50.88 |
51.97 |
1.09 |
| 2 |
Gandhi, Arya S (14)
|
ILBNY |
59.77 |
59.01 |
-0.76 |
| 3 |
Terry, Olivia R (13)
|
ILHEAT |
59.50 |
59.19 |
-0.31 |
| 4 |
Mansfield, Madilynn E (13)
|
ILYDSC |
1:01.84 |
1:01.75 |
-0.09 |
| 5 |
Mousty, Kyleigh E (13)
|
ILPAWW |
1:04.33 |
1:01.87 |
-2.46 |
| 6 |
Coe, Jasmine M (17)
|
ILHEAT |
53.38 |
1:01.90 |
8.52 |
| 7 |
Fuller, Payton J (14)
|
ILHEAT |
1:00.56 |
1:01.97 |
1.41 |
| 8 |
Johnson, Ava G (14)
|
ILFFSC |
1:02.82 |
1:02.25 |
-0.57 |
| 9 |
Mueller, Anna T (13)
|
ILBNY |
1:05.63 |
1:05.21 |
-0.42 |
| 10 |
Dempsey, Olivia E (13)
|
ILHEAT |
1:04.01 |
1:05.53 |
1.52 |
| 11 |
Jung, Chloe K (13)
|
ILHEAT |
1:07.51 |
1:05.61 |
-1.90 |
| 12 |
Kovalcik, Emmery A (16)
|
ILYDSC |
1:04.84 |
1:06.30 |
1.46 |
| 13 |
Gilbertz, Lin R (13)
|
ILHEAT |
1:06.86 |
1:06.34 |
-0.52 |
| 14 |
Steider, Catherine L (13)
|
ILFFSC |
|
1:08.33 |
- |
| 15 |
Gulley, Georgette G (13)
|
ILACAD |
1:07.14 |
1:08.44 |
1.30 |
| 16 |
Bopearatchy, Hiruni T (13)
|
ILPAWW |
1:15.47 |
1:12.40 |
-3.07 |
| 17 |
Lawton, Elizabeth S (13)
|
ILMARL |
1:14.13 |
1:13.67 |
-0.46 |
| 18 |
Robison, Addison M (11)
|
ILPAWW |
1:55.07 |
1:16.89 |
-38.18 |
| 19 |
Tibbitts, Jaycee G (14)
|
ILFFSC |
1:33.76 |
1:18.62 |
-15.14 |
| 20 |
Bishop, Devan M (16)
|
ILFFSC |
1:22.64 |
1:19.40 |
-3.24 |