| Clara González Lecaros | Santa Úrsula | | | |
| Valentina Cisneros Del Fierro | San Francisco Javier de Huechuraba | | | |
| Serie 1 |
| Maria Guzman Salinas | Los Alerces | 2 | 13.42 | 2 q |
| Teresita Montaner Covarrubias | Los Alerces | 5 | 13.64 | 5 q |
| Elisa Jaramillo Bustamante | Saint George's College | 3 | 13.67 | 6 q |
| Amalia Baboun Meschede | Nazaret | 1 | 13.70 | 7 |
| Margarita Dulcic Cruz | Cumbres | 4 | DNF | 11 |
| Javiera Ignacia García Oliva | San Francisco Javier de Huechuraba | 6 | | |
| Serie 2 |
| Catalina Rozas Arellano | Saint George's College | 1 | 12.86 | 1 q |
| Josefa Irarrazaval Riesco | Los Andes | 6 | 13.55 | 4 q |
| Isidora Santa Cruz Rodriguez | Nazaret | 3 | 14.09 | 8 |
| Martina Belen Cisternas Araya | Instituto Alonso de Ercilla | 2 | | |
| Magdalena Cofre Celis | Del Sagrado Corazón - Apoquindo | 4 | | |
| Serie 3 |
| Amalia Guzman Tondreau | Saint George's College | 6 | 13.51 | 3 q |
| Trinidad Díaz Díaz | Mariano de Schoenstatt | 4 | 14.78 | 9 |
| Maria Sagrario Viñuela Manterola | Los Andes | 5 | 15.79 | 10 |
| Catalina Goycoolea Varas | Cumbres | 1 | DNF | 12 |
| Macarena Achurra Luck | Santa Úrsula | 2 | | |
| Serie 4 |
| Isidora Alejandra Gonzalez Urbina | Melipilla | 1 | | |
| Pilar Dominguez Gines | Nazaret | 2 | | |
| Macarena Álvarez Reyes | Santa Úrsula | 3 | | |
| Josefina Irarrázaval Larraín | Los Alerces | 4 | | |
| Martina Mariné Durandeau | Cumbres | 5 | | |
| Olivia Lyon Gaete | San Isidro | 6 | | |
