| Serie 1 |
| Fernanda Besnier Vásquez | SSCC Manquehue | 8 | 11.19 | 5 q |
| Emilia Jarpa Fantoni | San Benito | 7 | 11.45 | 12 |
| Jacinta Mackenna Zegers | Los Andes | 4 | 11.48 | 13 |
| Trinidad Ponce Foster | Huelén | 1 | 11.49 | 14 |
| Lea Rodriguez Hurtado | Lycée Antoine de Saint-Exupéry | 2 | 11.51 (11.5100) | 15 |
| Laura Concha Ferrer | Saint George's College | 5 | 12.00 | 27 |
| María Paz Lastra Varela | La Maisonnette | 3 | 13.60 | 35 |
| Olivia Cisternas García-Huidobro | Santa Úrsula | 6 | DNS | |
| Serie 2 |
| Olivia Pino Cave | Saint George's College | 2 | 10.97 (CR) | 1 q |
| Laura Campaña Niemeyer | SSCC Manquehue | 5 | 11.11 | 4 q |
| Martina María Undurraga Galvez | San Benito | 4 | 11.40 | 10 |
| Catalina María Buchholtz Sotta | Santa Úrsula | 3 | 11.80 | 21 |
| Sofia Vial Lecaros | Los Andes | 7 | 11.99 | 26 |
| María Gracia Vergara Illanes | La Maisonnette | 6 | 12.25 | 30 |
| Francisca Mujica Wielandt | Huelén | 8 | 12.34 | 31 |
| Violette Cuvelier Richard | Lycée Antoine de Saint-Exupéry | 1 | DNF | |
| Serie 3 |
| Maria Eugenia Prieto Mujica | Los Andes | 6 | 11.01 | 2 q |
| Sofia Costabal Arrasate | San Benito | 1 | 11.65 | 19 |
| Isidora Maira De Casabuerta | La Maisonnette | 7 | 11.84 | 22 |
| Maria Elena Traverso Zuñiga | Huelén | 8 | 11.87 | 23 |
| Augusta Armas Fabrega | Saint George's College | 3 | 12.02 (12.0200) | 28 |
| Valentina Lopez Moreno | Lycée Antoine de Saint-Exupéry | 5 | 12.62 | 32 |
| Colomba Kubick Ugarte | Santa Úrsula | 2 | 13.42 | 34 |
| Rose Guerrero Montiel | SSCC Manquehue | 4 | DNS | |
| Serie 4 |
| Maite Del Rosario Cintolesi Lira | La Maisonnette | 5 | 11.31 | 7 q |
| Paula Jasmén Espinoza | Huelén | 2 | 11.36 (11.3600) | 8 q |
| Matilde Arteaga Novoa | Saint George's College | 4 | 11.41 | 11 |
| Emilia Peña Matte | Los Andes | 1 | 11.51 (11.5100) | 16 |
| Agustina Calderon Segovia | SSCC Manquehue | 6 | 11.53 | 17 |
| Maria Briceño Purcell | San Benito | 3 | 11.67 | 20 |
| Amalia Mendez Vergara | Santa Úrsula | 7 | 11.88 | 24 |
| Emilia Cabello Gonzales | Lycée Antoine de Saint-Exupéry | 8 | 13.34 | 33 |
| Serie 5 |
| Maria Velasco Baeza | Saint George's College | 7 | 11.02 | 3 q |
| Carmen Zarhi Mc Intyre | Huelén | 8 | 11.23 | 6 q |
| Lourdes Lewin Pacheco | San Benito | 5 | 11.36 (11.3600) | 9 |
| Inés María Santini Carvajal | Los Andes | 1 | 11.55 | 18 |
| Trinidad Melo Diaz Arana | Santa Úrsula | 3 | 11.92 | 25 |
| Muriel Valero Singer | Lycée Antoine de Saint-Exupéry | 6 | 12.02 (12.0200) | 29 |
| Valentina San Miguel Pulido | La Maisonnette | 2 | DNS | |
| Colomba Gomez Iturriaga | SSCC Manquehue | 4 | DNS | |
