| Atleta | Colegio | Pista | Resultado | Lugar |
|---|---|---|---|---|
| Serie 1 | ||||
| Martina Simonetti Miquel | Saint George's College | 4 | 10.50 | 2 q |
| Florencia De Jesús Ruiz-Tagle Berguecio | Nazaret | 5 | 10.99 | 6 q |
| Josefa Cárdenas Cáceres | Huelén | 1 | 11.30 | 7 q |
| Fatima Yarur Molina | Los Andes | 7 | 11.36 | 9 |
| Lucia Zenteno Soza | Everest | 6 | 12.02 | 15 |
| Consuelo García Lira | Los Alerces | 2 | 12.20 | 16 |
| Florencia Valenzuela Nazar | Cumbres | 3 | DNS | |
| Mariana Cubas Mardon | Santa Úrsula | 8 | DNS | |
| Serie 2 | ||||
| Luciana Cartoni Rojas | Cumbres | 2 | 10.84 | 3 q |
| Clara Fluxá Eguiguren | Los Andes | 5 | 10.89 | 5 q |
| Florencia Lyon Mesa | Everest | 6 | 11.54 | 10 |
| Sofía Larrea Sisamón | Santa Úrsula | 8 | 11.58 | 11 |
| Elena Arteaga Martínez | Saint George's College | 4 | 11.79 | 13 |
| Magdalena Donoso Dittborn | Nazaret | 7 | 14.87 | 19 |
| Serie 3 | ||||
| Amalia Tagle Bier | Santa Úrsula | 2 | 10.13 | 1 q |
| Alicia Tardell Sweet | Saint George's College | 7 | 10.87 | 4 q |
| Dominga Goycoolea Toloza | Cumbres | 3 | 11.35 | 8 q |
| Maria Irarrazaval Valdés | Los Andes | 5 | 11.69 | 12 |
| Maria Emilia Rosales Aguilera | Everest | 6 | 12.00 | 14 |
| Gracia Castillo Alcalde | Los Alerces | 4 | 12.66 | 17 |
| Josefina Mena Concha | Nazaret | 8 | 13.02 | 18 |
