| Serie 1 |
| Olivia Longo Toro | The Grange School | 1 | 11.29 | 1 q |
| Sofia Vallejos Ciudad | The Mayflower School | 5 | 11.45 | 2 q |
| Trinidad Howard Valdivia | Redland School | 6 | 12.03 | 14 |
| Constanza Gallardo Díaz | Saint Gabriel's School | 2 | 12.19 | 16 |
| Josefa Novoa Boettcher | Santiago College | 7 | 12.33 | 21 |
| Javiera Paz Songer Muñoz | Dunalastair - Peñalolén | 8 | 12.42 | 26 |
| Leonor Isabel Beatriz Esguerra Eitel | Bradford School | 3 | 12.57 | 27 |
| Monserrat Alejandra Valdebenito Bormann | The Wessex School - Concepción | 4 | 13.18 | 29 |
| Serie 2 |
| Alessandra Massu Cornez | St. Margaret’s British School | 2 | 11.52 | 4 q |
| Kiara Norton Sukni | The Grange School | 3 | 11.73 | 8 q |
| Victoria Crisóstomo Arredondo | Saint Gabriel's School | 4 | 12.13 | 15 |
| Laura Zavala Correa | St. Margaret’s British School | 7 | 12.22 | 18 |
| Dominga Garcia Barrientos | Craighouse School | 1 | 12.27 | 19 |
| Rafaela Francois Salas | Redland School | 5 | 12.40 | 24 |
| Manuela Gutierrez Betancourt | Santiago College | 6 | 12.41 | 25 |
| Emilia Isidora Cáceres Medina | The Wessex School - Concepción | 8 | 13.70 | 31 |
| Serie 3 |
| Laura Lopes Faraggi | The Grange School | 6 | 11.67 | 6 q |
| Sofía Ignacia Garretón Ferrer | Bradford School | 5 | 11.74 | 9 |
| Rosario Isabel Rubilar Garcia | St. Margaret’s British School | 1 | 11.76 | 10 |
| Daniela Fernandez Gonzalez | Craighouse School | 2 | 11.86 | 11 |
| Martina Bustos Oyanedel | Craighouse School | 4 | 11.92 | 12 |
| Victoria Elena López Fuentealba | Dunalastair - Peñalolén | 7 | 12.38 | 23 |
| Maria Catalina Vivanco Lopez | Dunalastair - Chicureo | 3 | 12.81 | 28 |
| Ignacia Arancibia Lillo | Dunalastair - Chicureo | 8 | 13.54 | 30 |
| Serie 4 |
| Violeta Sepulveda Valenzuela | The Mayflower School | 7 | 11.51 | 3 q |
| Julieta Sierra Donoso | Saint Gabriel's School | 8 | 11.62 | 5 q |
| Amparo Castaño Bravo | The Mayflower School | 6 | 11.69 | 7 q |
| Dominga Blumen Webb | Bradford School | 3 | 11.92 | 12 |
| Sofia Manriquez Baumgarten | Santiago College | 2 | 12.21 | 17 |
| Dominga Reyes Marquez | Redland School | 4 | 12.29 | 20 |
| Francisca Artes Miranda | Dunalastair - Chicureo | 5 | 12.33 | 21 |
| Agustina Esperanza Gómez Merino | The Wessex School - Concepción | 1 | 14.23 | 32 |
