| Serie 1 |
| Maximiliano Matta Schilling | Saint George's College | 4 | 11.57 | 1 q |
| Ignacio Germán Jensen Correa | Saint George's College | 3 | 12.05 | 5 q |
| Max Prieto Mujica | Tabancura | 6 | 12.18 | 8 q |
| Julian Urbina Maldonado | Instituto Chacabuco | 7 | 12.47 | 11 |
| Dante Roba Muñoz | SSCC Manquehue | 5 | 12.57 | 14 |
| Ignacio Alejandro Cisternas Orellana | Marista - Diego Echeverría | 1 | 13.36 | 18 |
| Andrés Salvatierra Freire | Lycée Antoine de Saint-Exupéry | 2 | 13.77 | 19 |
| Serie 2 |
| Juan Jose Gutierrez Sotomayor | SSCC Manquehue | 6 | 12.03 | 4 q |
| Santiago Guzmán Díaz | Saint George's College | 3 | 12.11 | 6 q |
| Manuel Eyzaguirre Ugarte | Tabancura | 5 | 12.23 | 9 |
| Samuel Grohnert Rendoll | San Benito | 4 | 12.36 | 10 |
| Cristian Correa Rivera | SSCC Manquehue | 2 | 12.51 (12.5100) | 12 |
| Martin Pizarro Murphi | Instituto Chacabuco | 7 | DNS | |
| Serie 3 |
| Martin Casali Irarrázabal | Saint George's College | 7 | 11.63 | 2 q |
| Nicolas Cruzat Soza | Tabancura | 4 | 12.58 | 15 |
| Joaquin Cordes Covarrubias | SSCC Manquehue | 5 | 12.98 | 16 |
| Mateo Jeremias Guzman Palma | Marista - Diego Echeverría | 2 | 14.14 | 21 |
| Tomas Miranda Plaza | María Luisa Bombal | 3 | DNS | |
| Cristóbal Irarrázaval Riesco | Tabancura | 6 | DNS | |
| Serie 4 |
| Nicolas Oyanedel Hermosilla | SSCC Manquehue | 4 | 11.85 | 3 q |
| Pedro Ossa Rodriguez | Tabancura | 6 | 12.15 | 7 q |
| Nicolás Ceresa Alfaro | Saint George's College | 7 | 12.51 (12.5100) | 13 |
| Maximo Demian Allendes Garrido | Marista - Diego Echeverría | 2 | 13.26 | 17 |
| Agustín Andres Mansuy Legarraga | Lycée Antoine de Saint-Exupéry | 5 | 13.93 | 20 |
| Franco Badani Larrondo | Instituto Chacabuco | 3 | DNS | |
