| Serie 1 |
| Olivia Susacasa Frederich | Saint George's College | 2 | 11.87 | 9 |
| Lucía Paraje Albertinazzi | Lycée Antoine de Saint-Exupéry | 1 | 11.90 | 11 |
| Olivia Lathrop Solis | SSCC Manquehue | 3 | 12.14 | 15 |
| Isabel Gonzalez Ruiz De Gamboa | La Maisonnette | 8 | 12.40 | 17 |
| Maria Kast Edwards | Santa Úrsula | 4 | DNS | |
| Amelia Galit Cárcamo Aracena | María Luisa Bombal | 5 | DNS | |
| Maria De La Luz Zuñiga Errázuriz | Huelén | 6 | DNS | |
| Teresita Sweet Undurraga | San Benito | 7 | DNS | |
| Serie 2 |
| Florencia De La Sotta Garcia | Huelén | 5 | 11.04 | 1 q |
| Antonia Vargas Vives | SSCC Manquehue | 4 | 11.78 | 6 q |
| Catalina Corrada Simian | Lycée Antoine de Saint-Exupéry | 2 | 11.83 | 8 q |
| Elisa Pérez Figueroa | La Maisonnette | 3 | 11.93 | 12 |
| Amparo Cerda Cornejo | Saint George's College | 8 | 11.96 | 14 |
| Catalina Sabat Rodillo | San Benito | 7 | 12.27 | 16 |
| Sofía Vidal Branth | Santa Úrsula | 1 | 13.32 | 19 |
| Mia Gonzales Britez | Instituto Chacabuco | 6 | DNS | |
| Serie 3 |
| Laura Wood Lewin | SSCC Manquehue | 1 | 11.27 | 2 q |
| Maria De La Luz Zuñiga Errázuriz | Huelén | 7 | 11.36 | 3 q |
| Josefina Stolzmann Von Unger | Huelén | 8 | 11.46 | 4 q |
| Olivia Arteaga Figueroa | Saint George's College | 4 | 11.60 | 5 q |
| Manuela Dussart Infante | Lycée Antoine de Saint-Exupéry | 6 | 11.79 | 7 q |
| Cayetana Fernández Fuertes | La Maisonnette | 3 | 11.88 | 10 |
| Clara Irarrazaval Puente | San Benito | 5 | 11.95 | 13 |
| Maria Kast Edwards | Santa Úrsula | 2 | 13.05 | 18 |
