| Serie 1 |
| Consuelo Flores Cid | Saint John's School - Concepción | 2 | 11.27 | q |
| Yester Avila Salas | Escuela Aníbal Pinto - Cauquenes | 8 | 11.31 | q |
| Isidora Carrasco Navarrete | Liceo Bicentenario Polivalente San Nicolás | 5 | 11.59 | |
| Valentina Valencia Muñoz | SSCC Alameda | 3 | 12.28 | |
| Manuela Carmach Martinez | Alemán de Chillán | 1 | | |
| Maria Jose Aedo Rosas | Bernardo Felmer Niklitschek - Lanco | 4 | | |
| Maria Emilia Mardones Ovalle | Alemán de Chillán | 6 | | |
| Tania Elizabeth Romero Luengo | Bernardo Felmer Niklitschek - Lanco | 7 | | |
| Serie 2 |
| Florencia Macarena Zaneta Guzman | Saint James School | 1 | 11.18 | q |
| Antonia Caroca Ahumada | SSCC Alameda | 2 | 11.69 | |
| Isidora Antonia Zapata Lizana | SSCC Concepción | 8 | 11.73 | |
| Vitoria Alexandra Ubilla Gonzalez | Saint James School | 6 | 11.89 | |
| Maite Gamarra Valencia | Santa Cruz - Chicureo | 5 | 12.25 | |
| Francisca Antonia Castillo Bustos | SSCC Concepción | 7 | 12.47 | |
| Gabriela Fernanda Escare Aguero | Bernardo Felmer Niklitschek - Lanco | 3 | | |
| Luz Belen Flores Leiva | Pablo Neruda - Parral | 4 | | |
| Serie 3 |
| Catalina Eugenia Contreras Elgueda | Liceo Abate Molina | 6 | 11.10 | q |
| Amelia Garcia Echegaray | Santa Cruz - Chicureo | 7 | 11.23 | q |
| Sofia Torres Letelier | Escuela Aníbal Pinto - Cauquenes | 2 | 11.42 | q |
| Martina Ignacia Mejias Lee | Padre Hurtado de Chillán | 4 | 11.45 | q |
| Amaya Constanzo Mancilla | Santa Cruz - Chicureo | 3 | 11.80 | |
| Maria Jose Peña Riquleme | Liceo Bicentenario Polivalente San Nicolás | 8 | 12.24 | |
| Magdalena Victoria Cifuentes Mendez | Alemán de Chillán | 5 | | |
| Serie 4 |
| Josefa Antonia Droguet Quintana | Saint James School | 4 | 11.46 | q |
| Paula Fernanda Contreras Henriquez | SSCC Concepción | 2 | 11.68 | |
| Esperanza Monserath Cerda Yañez | Liceo Bicentenario Polivalente San Nicolás | 6 | 13.59 | |
| Amparo Herrera Lonardi | Saint John's School - Concepción | 3 | | |
| Giuliana Angelina Rubilar Mautz | Alborada - Linares | 5 | | |
| Pía Florencia Hachim Opazo | Alborada - Linares | 7 | | |
| Fernanda Jesús Vásquez Canales | Concepción - Linares | 8 | | |
