| 27 | 12 | Emma | Atkinson | F | 17 | F1718 | Germantown Academy Aquati | 2 | 1:03:48 |
| 364 | 19 | Tylor | Mathieu | F | 18 | F1718 | Grit Aquatics Llc | 2 | 1:05:28 |
| 280 | 26 | Anna | Kalandadze | F | 17 | F1718 | Radnor Aquatic Club | 2 | 1:06:50 |
| 64 | 27 | Carol-Lena | Breiter | F | 17 | F1718 | Phoenix Swimming | 2 | 1:07:20 |
| 22 | 72 | Emily | Appleton | F | 17 | F1718 | Weymouth Club Waves | 2 | 1:11:07 |
| 196 | 82 | Abigail | Francis | F | 18 | F1718 | Laurel East Hartford Ymca | 2 | 1:12:06 |
| 170 | 88 | Erica | Esterly | F | 17 | F1718 | Scottsdale Aquatic Club | 2 | 1:12:52 |
| 599 | 90 | Molly | Watts | F | 17 | F1718 | Nation's Capital Swim Clu | 2 | 1:13:06 |
| 89 | 94 | Kelsey | Cashman | F | 17 | F1718 | Eagle Swim Team | 2 | 1:14:02 |
| 168 | 101 | Lauren | Eng | F | 17 | F1718 | Asphalt Green Unified Aqu | 2 | 1:14:43 |
| 391 | 104 | Caitlin | Moore | F | 17 | F1718 | Eht Seahawks | 2 | 1:15:13 |
| 477 | 112 | Marlena | Reinhard | F | 17 | F1718 | Weymouth Club Waves | 2 | 1:15:50 |
| 294 | 113 | Allyson | Kraff | F | 18 | F1718 | Long Island Express | 2 | 1:15:51 |
| 483 | 118 | Sarah | Rice | F | 17 | F1718 | Weymouth Club Waves | 2 | 1:17:49 |
| 455 | 122 | Arianna | Petrovia | F | 17 | F1718 | Nrg Swimming | 2 | 1:18:12 |
| 108 | 128 | Jordan | Clements | F | 18 | F1718 | Phoenix Swimming | 2 | 1:18:21 |
| 478 | 132 | Sandra | Remson | F | 17 | F1718 | Zeus Swim Team | 2 | 1:18:23 |
| 383 | 134 | Maya | Milrod | F | 17 | F1718 | Asphalt Green Unified Aqu | 2 | 1:18:26 |
| 612 | 136 | Alexandra | Yee | F | 18 | F1718 | New Canaan Ymca Caimans | 2 | 1:18:29 |
| 426 | 148 | Electa | Norton | F | 17 | F1718 | Asphalt Green Unified Aqu | 2 | 1:21:11 |
| 114 | 149 | Anne | Connors | F | 17 | F1718 | Nation's Capital Swim Clu | 2 | 1:21:18 |