| Serie 1 |
| Maria Rosario Canahuate Muñoz | Atlético Quilamapu | 3 | 10.77 | 1 q |
| Antonia Beatriz Wulf Mondaca | Atlético San Nicolás | 2 | 11.53 | 4 q |
| Rosario Ainardi Garrido | Colegio Padre Hurtado de Chillan | 1 | 11.75 | 5 q |
| Florencia Zelaya Opazo | Colegio Padre Hurtado de Chillan | 7 | 11.78 | 6 q |
| Victoria Elisa Ferrada Rayo | Atletas Senior Chillán | 8 | 11.95 | 8 q |
| Josefa Ignacia Roca Leiva | Atlético San Nicolás | 6 | 12.59 | 13 |
| Olivia Lasserre Rojas | Atlético Quilamapu | 4 | 12.72 | 15 |
| Clara De Marchena Carlin | Atlético Quilamapu | 5 | DNS | |
| Serie 2 |
| Constanza Aguero Merino | Colegio Padre Hurtado de Chillan | 2 | 11.20 | 2 q |
| Gabriela Muñoz Carrasco | Colegio Padre Hurtado de Chillan | 8 | 11.80 | 7 q |
| Maria Ignacia Castillo Guerrero | Atlético Quilamapu | 6 | 12.10 | 10 |
| Julieta Camila Chavez Letelier | Atlético Quilamapu | 3 | 12.63 | 14 |
| Agustina Ignacia Troncoso Torres | Atlético San Nicolás | 4 | DNS | |
| Martina Isidora Henríquez Salamanca | Atlético Tres Runners | 5 | DNS | |
| Maite Andrea Farfán Jaque | Atletas Senior Chillán | 7 | DNS | |
| Serie 3 |
| Emilia Retamal Erratchou | Atlético Quilamapu | 6 | 11.50 | 3 q |
| Trinidad Herrera Guerra | Atlético Universidad del Bio Bio | 3 | 11.96 | 9 |
| Taira Isidora Acevedo Reyes | Colegio Padre Hurtado de Chillan | 4 | 12.16 | 11 |
| Sofia Sarai Urriaga Figueroa | Atlético San Nicolás | 2 | 12.22 | 12 |
| Emilia Campusano Leiva | Colegio Padre Hurtado de Chillan | 8 | 13.12 | 16 |
| Martina Unda Rivera | Atlético San Nicolás | 5 | DNS | |
| Emilia Antonia Fuentes Vasquez | Atlético Quilamapu | 7 | DNS | |
