| Serie 1 |
| Florencia De La Sotta Garcia | Huelén | 8 | 10.13 | 2 q |
| Martina Simonetti Miquel | Saint George's College | 4 | 10.14 | 3 q |
| Lourdes Aguero Ureta | Los Andes | 2 | 10.33 | 6 q |
| Ignacia Carcamo Larrain | Everest | 6 | 10.92 | 11 |
| Luciana Cartoni Rojas | Cumbres | 5 | 11.04 (11.0400) | 13 |
| Ana MarĂa Merino Burmester | Los Alerces | 7 | 11.04 (11.0400) | 14 |
| Josefina Mena Concha | Nazaret | 3 | 11.72 | 17 |
| Serie 2 |
| Colomba Llodrá Frauenberg | Saint George's College | 6 | 10.10 | 1 q |
| SofĂa Irribarren Letelier | Everest | 5 | 10.40 | 8 q |
| Clara Fluxá Eguiguren | Los Andes | 8 | 10.55 | 9 |
| Josefa Cárdenas Cáceres | Huelén | 7 | 10.75 | 10 |
| Gracia Castillo Alcalde | Los Alerces | 3 | 11.46 | 16 |
| Olivia Zulueta De Solminihac | Nazaret | 2 | DNS | |
| Isabel Claro Irarrázaval | Cumbres | 4 | DNS | |
| Serie 3 |
| Magdalena GarcĂa-Huidobro Cartwright | Everest | 2 | 10.16 | 4 q |
| Josefina Stolzmann Von Unger | Huelén | 6 | 10.29 | 5 q |
| Alicia Tardel Swett | Saint George's College | 5 | 10.34 | 7 q |
| Maria Irarrazaval Valdés | Los Andes | 4 | 10.97 | 12 |
| Antonia Vargas Vives | SSCC Manquehue | 8 | 11.33 | 15 |
| Emilia Pizarro De Tezanos Pinto | Los Alerces | 3 | DNF | |
| Javiera Hernandez Mussuto | Internacional SEK | 7 | DNS | |
