| Serie 1 |
| Ethan Jana A | The Grange School | 4 | 11.73 | 2 q |
| Ricardo Andrés Rozas Dvorakova | Dunalastair - Chicureo | 6 | 12.06 | 6 q |
| Cristian Montes A | The Grange School | 5 | 12.17 | 11 |
| Phillip Gerszencvich Herzfeld | Santiago College | 3 | 12.35 | 17 |
| Gonzalo Vargas Mangel | The Mackay School | 8 | 12.50 | 19 |
| Francisco Elgueta Pearce | The Mackay School | 2 | 12.51 | 20 |
| Jorge Alfredo Jiménez Enríquez | The Wessex School - Concepción | 1 | 13.11 | 22 |
| Vicente Bocchieri Villalobos | The Mayflower School | 7 | | |
| Serie 2 |
| Cristobal San Martin | Saint John's School - Concepción | 4 | 11.81 | 3 q |
| Martín Promis Picón | Saint Gabriel's School | 5 | 12.12 | 9 |
| Benjamin Pimentel Jarpa | Craighouse School | 6 | 12.18 | 12 |
| Domenico Gianni Avelli Maira | Bradford School | 7 | 12.30 | 14 |
| Santiago De La Cuadra A | The Grange School | 3 | 12.37 | 18 |
| Franco Airola Diaz De Cerio | The Mackay School | 1 | 13.18 | 23 |
| Martín Andres Seguel Flores | The Wessex School - Concepción | 2 | 13.38 | 24 |
| Joao Alves Costa Mendonca | Craighouse School | 8 | 17.74 | 25 |
| Serie 3 |
| Martín Muñoz Pavéz | Dunalastair - Chicureo | 6 | 11.88 | 4 q |
| Carlos Titze Chimentti | Trebulco School | 4 | 11.98 | 5 q |
| Javier Olate Martinez | Saint Gabriel's School | 5 | 12.08 | 7 q |
| Juan Cristobal Diaz Pacheco | Bradford School | 8 | 12.23 | 13 |
| Matias Leyton Bywaters | The Mayflower School | 7 | 12.30 | 15 |
| José Tomás Bravo Rosa | Saint Gabriel's School | 3 | 12.79 | 21 |
| Agustin Araya Arancibia | Santiago College | 2 | | |
| Serie 4 |
| Pablo Titze Chimenti | Trebulco School | 4 | 11.65 | 1 q |
| Bernardo Puerta Bronchalo | Bradford School | 6 | 12.10 | 8 q |
| Rafael Palacios Cisterna | Craighouse School | 8 | 12.14 | 10 |
| Tomás Santiago Queirolo Furtado | Dunalastair - Chicureo | 7 | 12.33 | 16 |
| Tomás Martel Muñoz | The Wessex School - Concepción | 2 | | |
| Agustin Hinzpeter Sepulveda | Santiago College | 3 | | |
| Benjamin Diaz Latrach | The Mayflower School | 5 | | |
