| Serie 1 |
| Esperanza Schaffer Correa | Saint Gabriel's School | 4 | 13.28 | 1 q |
| Colomba Infante Spencer | Santiago College | 6 | 13.49 | 3 q |
| Nicole Schmidt A | The Grange School | 5 | 13.92 | 5 q |
| Bárbara Gómez Valdés | Trebulco School | 3 | 14.14 | 9 |
| Daniela Antonia Alamos Valdivieso | The Wessex School - Concepción | 2 | 15.95 | 23 |
| Rafaela Ignacia Arrau Alarcon | The Wessex School - Concepción | 7 | | |
| Sofía Agustina Hernández Galindo | The Wessex School - Concepción | 8 | DNF | |
| Serie 2 |
| Mila Duluc A | The Grange School | 4 | 13.29 | 2 q |
| Dominga Bezanilla Fernández | St. Margaret’s British School | 5 | 14.10 | 8 q |
| Constanza Vega Contreras | The Mayflower School | 2 | 14.19 | 10 |
| Matilde Tapia Pantoja | Saint Gabriel's School | 3 | 14.28 | 11 |
| Rafaella Licci Licci | Craighouse School | 6 | 14.40 | 14 |
| Tania Fernàndez Fossati | Craighouse School | 8 | 14.53 | 17 |
| Antonia Sofia Hidalgo Pradena | Dunalastair - Chicureo | 7 | 14.96 | 20 |
| Serie 3 |
| Eileen Volker Orfali | St. Margaret’s British School | 5 | 14.03 | 7 q |
| María José Giakoni Maturana | Dunalastair - Chicureo | 7 | 14.42 | 15 |
| Jacinta Vallejos Ciudad | The Mayflower School | 4 | 14.48 | 16 |
| Isidora Garcia Araque | Bradford School | 2 | 14.61 | 19 |
| Emilia De La Luz Lorca Cabezas | St. Margaret’s British School | 3 | 15.23 | 21 |
| Antonia Chavez Navarrete | Bradford School | 1 | 15.78 | 22 |
| Belén Araneda Viana | Trebulco School | | | |
| Emilia Rocío Moya Medina | Santiago College | | | |
| Serie 4 |
| Catalina Carrillo A | The Grange School | 4 | 13.59 | 4 q |
| Isidora Barrenechea Federici | Saint Gabriel's School | 5 | 14.00 | 6 q |
| Carolyn Nazal Escobar | Bradford School | 2 | 14.37 | 12 |
| Guillermina Gustavson Guayama | Craighouse School | 7 | 14.39 | 13 |
| Maria Jesus Lago Damm | Dunalastair - Chicureo | 8 | 14.60 | 18 |
| Francisca Ahumada Carvallo | The Mayflower School | 3 | | |
| Silvana Sofia Bozzo Pinilla | Santiago College | 6 | | |
