| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Coe, Angela A (15)
|
ILHEAT |
56.81 |
59.74 |
2.93 |
| 2 |
Coe, Jasmine M (17)
|
ILHEAT |
59.52 |
1:05.77 |
6.25 |
| 3 |
Terry, Olivia R (13)
|
ILHEAT |
1:06.14 |
1:06.27 |
0.13 |
| 4 |
Mansfield, Madilynn E (13)
|
ILYDSC |
1:08.93 |
1:09.20 |
0.27 |
| 5 |
Dunakey, Becka D (12)
|
ILYDSC |
1:11.11 |
1:09.40 |
-1.71 |
| 6 |
Gandhi, Arya S (14)
|
ILBNY |
1:10.00 |
1:09.70 |
-0.30 |
| 7 |
Johnson, Ava G (14)
|
ILFFSC |
1:08.62 |
1:09.81 |
1.19 |
| 8 |
Mousty, Kyleigh E (13)
|
ILPAWW |
1:17.30 |
1:14.15 |
-3.15 |
| 9 |
Dempsey, Olivia E (13)
|
ILHEAT |
1:11.52 |
1:14.69 |
3.17 |
| 10 |
Mueller, Anna T (13)
|
ILBNY |
1:15.40 |
1:16.40 |
1.00 |
| 11 |
Lawton, Elizabeth S (13)
|
ILMARL |
1:22.08 |
1:19.46 |
-2.62 |
| 12 |
Steider, Catherine L (13)
|
ILFFSC |
|
1:19.49 |
- |
| 13 |
Bishop, Devan M (16)
|
ILFFSC |
1:28.97 |
1:30.48 |
1.51 |
| 14 |
Gilbertz, Lin R (13)
|
ILHEAT |
1:22.52 |
1:33.04 |
10.52 |
| 15 |
Tibbitts, Jaycee G (14)
|
ILFFSC |
1:53.40 |
1:35.00 |
-18.40 |
| 16 |
Winters, Kaylin D (13)
|
ILOCS |
1:38.42 |
1:35.85 |
-2.57 |
|
Harrison, Emma R (13)
|
ILFFSC |
1:31.51 |
DQ |
- |
|
Short, Eleanor M (11)
|
ILYDSC |
1:12.07 |
NS |
- |