| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Herbert, Owain G (16)
|
MAMERC |
1:05.23 |
1:08.73 |
3.50 |
| 2 |
Button, Samuel M (13)
|
MRNDAC |
1:19.28 |
1:13.31 |
-5.97 |
| 3 |
Gutterman, Hunter M (14)
|
MRNDAC |
1:17.01 |
1:16.08 |
-0.93 |
| 4 |
Chen-Suzuki, Keizo N (14)
|
MRNDAC |
1:18.76 |
1:20.26 |
1.50 |
| 5 |
Heidebrecht, Martin H (14)
|
MRNDAC |
1:25.99 |
1:21.03 |
-4.96 |
| 6 |
Smith, Charlotte T (15)
|
MRNDAC |
1:16.20 |
1:23.33 |
7.13 |
| 7 |
Button, Molly I (13)
|
MRNDAC |
1:29.44 |
1:24.53 |
-4.91 |
| 8 |
Dorner, Benjamin R (13)
|
MRNDAC |
1:32.78 |
1:34.32 |
1.54 |
| 9 |
Meddaugh, Brock W (13)
|
MRNDAC |
1:38.08 |
1:37.81 |
-0.27 |
| 10 |
Hayes, Chloe E (14)
|
MRNDAC |
1:50.62 |
1:38.30 |
-12.32 |
| 11 |
Dorner, Declan M (11)
|
MRNDAC |
1:40.68 |
1:40.09 |
-0.59 |