| Atleta | Colegio | Pista | Resultado | Lugar |
|---|---|---|---|---|
| Serie 1 | ||||
| Macarena Teresita Irarrazaval Valdes | Los Andes | 4 | 12.35 | 3 q |
| Jacinta Cornejo Lopez | Saint George's College | 2 | 12.50 | 4 q |
| Maria Guzman Salinas | Los Alerces | 7 | 13.04 | 6 q |
| Blanca Iñiguez Greene | Everest | 3 | 13.26 | 7 q |
| Agustina Correa Eguiguren | Los Alerces | 8 | 13.92 | 9 |
| Amalia Urzua Ariztia | Nazaret | 6 | 13.96 | 10 |
| Dominga Costa Lorenzini | SSCC Manquehue | 5 | 14.06 | 11 |
| Serie 2 | ||||
| Catalina Rozas Arellano | Saint George's College | 4 | 11.54 (CR) | 1 q |
| Emilia Toloza Chellew | Cumbres | 3 | 12.32 | 2 q |
| Pilar Dominguez Gines | Nazaret | 8 | 12.94 | 5 q |
| María Trinidad Barros Barceló | Everest | 6 | 13.78 | 8 q |
| Isabel Larrain Izquierdo | Los Alerces | 5 | 14.20 | 12 |
