| Results - 1/4 Finals | |||||||||||
| Heat | Rank | Bike | Name | NOC | Gate | Start | Turn_1 | Turn_2 | Turn_3 | Time | Mark |
| 1 | 1 | 100 | PAJON Mariana | COL | 2 | 2.436 | 8.632 | 17.961 | 27.071 | 35.466 | Q |
| 1 | 2 | 210 | CHRISTENSEN Simone Tetsche | DEN | 1 | 2.503 | 9.061 | 18.775 | 27.850 | 35.975 | Q |
| 1 | 3 | 469 | HERNANDEZ Stefany | VEN | 3 | 2.457 | 8.879 | 18.412 | 28.062 | 36.442 | Q |
| 1 | 4 | 29 | HUISMAN Ruby | NED | 4 | 2.487 | 9.005 | 18.992 | 28.569 | 36.855 | Q |
| 1 | 5 | 111 | NAGARE Miru | JPN | 5 | 2.580 | 9.350 | 19.431 | 29.298 | 38.382 | |
| 2 | 1 | 156 | AZUERO Domenica | ECU | 1 | 2.471 | 8.730 | 18.406 | 27.859 | 36.238 | Q |
| 2 | 2 | 41 | SUVOROVA Natalia | RUS | 3 | 2.510 | 8.897 | 18.842 | 28.358 | 36.658 | Q |
| 2 | 3 | 93 | STEVAUX CARNAVAL Priscilla | BRA | 6 | 2.545 | 8.873 | 18.743 | 28.618 | 36.943 | Q |
| 2 | 4 | 105 | BOLLE CARRILLO Gabriela | COL | 4 | 2.620 | 9.325 | 19.289 | 29.073 | 37.695 | Q |
| 2 | 5 | 49 | TUCHSCHERER Daina | CAN | 2 | 2.521 | 9.125 | 19.058 | 29.515 | 38.102 | |
| 3 | 1 | 33 | GEORGE Danielle | USA | 1 | 2.444 | 8.673 | 18.011 | 27.312 | 35.665 | Q |
| 3 | 2 | 110 | SMULDERS Laura | NED | 2 | 2.475 | 8.774 | 18.224 | 27.592 | 35.679 | Q |
| 3 | 3 | 388 | BAAUW Judy | NED | 4 | 2.517 | 8.879 | 18.575 | 28.000 | 36.219 | Q |
| 3 | 4 | 114 | PETERSONE Vineta | LAT | 5 | 2.545 | 9.135 | 18.811 | 28.263 | 36.486 | Q |
| 3 | 5 | 104 | RUARTE Constanza Del Valle | ARG | 6 | 2.766 | 11.963 | 22.791 | 33.305 | 43.301 | |
| 4 | 1 | 89 | BONDARENKO Yaroslava | RUS | 1 | 2.472 | 8.797 | 18.275 | 27.454 | 35.753 | Q |
| 4 | 2 | 446 | DIAZ Maria Gabriela | ARG | 2 | 2.486 | 9.034 | 18.415 | 27.820 | 35.998 | Q |
| 4 | 3 | 80 | DIAZ Mariana | ARG | 4 | 2.577 | 9.188 | 18.601 | 27.997 | 36.000 | Q |
| 4 | 4 | 116 | AFREMOVA Natalia | RUS | 3 | 2.468 | 8.965 | 18.619 | 28.140 | 36.429 | Q |
| 4 | 5 | 113 | TANNO Kanami | JPN | 5 | 2.527 | 9.146 | 18.753 | 28.591 | 37.230 | |