| Atleta | Colegio | Pista | Resultado | Lugar |
|---|---|---|---|---|
| Serie 1 | ||||
| Emilia Toro Vidal | Everest | 2 | 11.67 | 8 q |
| María Jesús Musalem Lyng | Nazaret | 4 | 11.83 | 9 q |
| María Alejandra Vial Prieto | San Benito | 3 | 12.41 | 15 |
| Isidora Paz Fuentes Martinez | SSCC Manquehue | 1 | DNS | |
| Emilia Molina Lecaros | Highlands | 5 | DNS | |
| Serie 2 | ||||
| Florencia Colomba Tavonatti Gómez | Nazaret | 4 | 11.45 | 3 q |
| Ignacia Vigil Vasquez | Everest | 5 | 11.54 | 6 q |
| María Paz Chait Matte | San Benito | 2 | 11.98 | 11 |
| Rosario Bernier Araya | SSCC Manquehue | 1 | DNS | |
| Maria Lacamara Correa | Highlands | 3 | DNS | |
| Serie 3 | ||||
| Camila Tavonatti Gómez | Nazaret | 3 | 11.05 | 1 q |
| Magdalena Paredes Cañas | SSCC Manquehue | 2 | 11.39 | 2 q |
| Maria Gracia Monasterio Roman | Highlands | 5 | 11.60 | 7 q |
| Isidora Arriagada Polanco | San Benito | 4 | 11.96 | 10 q |
| Amalia Cristina Castillo Larios | Everest | 1 | 12.03 | 12 |
| Serie 4 | ||||
| Isidora Matte Ventura-Junca | Everest | 3 | 11.46 | 4 q |
| Carolina Fellay Marin | Nazaret | 4 | 11.51 | 5 q |
| Piera Montanari Carminoto | Highlands | 2 | 12.06 | 13 |
| Josefa Viveros Campos | San Benito | 5 | 12.31 | 14 |
