| 1 | Anna Quinn (Senior) | USA | 1:18.92 | | - |
| 2 | Blair Cruikshank (Senior) | USA | 1:19.64 | SB | +0.720 |
| 3 | Giorgia Birkeland (Neo) | USA | 1:19.91 | | +0.990 |
| 4 | Emma de Bock (B1) | USA | 1:20.23 | PB | +1.310 |
| 5 | Maria Victoria Rodriguez (Senior) | ARG | 1:20.37 | | +1.450 |
| 6 | Libby Williams (Neo) | USA | 1:20.69 | SB | +1.770 |
| 7 | Piper Yde (Neo) | USA | 1:20.71 | SB | +1.790 |
| 8 | Ilsa Melin Sandvig Shobe (Senior) | USA | 1:21.40 | PB | +2.480 |
| 9 | Rebecca Simmons (M35) | USA | 1:23.88 | | +4.960 |
| 10 | Larissa Paes (M30) | BRA | 1:24.94 | | +6.020 |
| 11 | Natascha Lindenskov (Neo) | DEN | 1:25.04 | | +6.120 |
| 12 | Karen Lizeth Siatama Valencia (A2) | COL | 1:25.64 | | +6.720 |
| 13 | Shruti Kotwal (M30) | IND | 1:25.96 | | +7.040 |
| 14 | Amy Acosta (Neo) | ECU | 1:26.03 | | +7.110 |
| 15 | Jenni Kukkonen (M35) | FIN | 1:26.14 | | +7.220 |
| 16 | Evie Forrer (B1) | USA | 1:26.48 | | +7.560 |
| 17 | Cynthia Jennings (Senior) | USA | 1:27.31 | | +8.390 |
| 18 | Natalie Rodrigue-Hasselback (M50) | USA | 1:31.13 | | +12.210 |
| 19 | Barbara Johnson (M70) | USA | 1:38.81 | | +19.890 |
| 20 | Kathy Feinberg (M60) | USA | 1:54.34 | | +35.420 |
| DNS | Isabela Vargas Rodriguez (A1) | COL | DNS | | - |