| Serie 1 |
| Cristian Vial Errazuriz | Tabancura | 8 | 11.38 | 1 q |
| Jaime Tagle Dufeu | San Benito | 7 | 11.96 | 2 |
| Tomas Rabat Barros | Tabancura | 3 | 12.13 | 3 |
| Alejandro Rico Rozo | SSCC Manquehue | 2 | 12.16 | 4 |
| Matias Silva Diaz | Saint Gabriel's School | 6 | 12.24 | 5 |
| Felipe Calderon Espoz | SSCC Manquehue | 1 | | |
| Matías Schaub Riveaux | Alemán de Santiago | 4 | | |
| Matías Wollvett Keim | Alemán de Santiago | 5 | | |
| Serie 2 |
| Santiago Aguilera Medina | Cordillera | 4 | 11.51 | 1 q |
| Nicolas Tejos Florenzano | Saint George's College | 3 | 11.84 | 2 q |
| Matias Fernandez Saez | Saint Gabriel's School | 8 | 12.07 | 3 |
| Francisco Fuenzalida Salazar | The Mayflower School | 2 | | |
| Agustín Lorca Castelblanco | San Anselmo | 5 | | |
| Benjamín Rodríguez Alvarado | San Francisco de Asís | 6 | | |
| Francisco Palma Muñoz | Liceo Salesiano Manuel Arriaran Barros | 7 | | |
| Serie 3 |
| Juan Luis Eguiguren Zalaquett | Tabancura | 4 | 11.38 | 1 q |
| Matías Andrades Molina | Liceo Maipú | 2 | 11.93 | 2 |
| Galo Echeverría Crocco | Everest | 3 | 12.39 | 3 |
| Sebastián Gómez Valdés | Trebulco School | 7 | 12.43 | 4 |
| Cristobal Fermandois Carrillo | San Francisco Javier de Huechuraba | 6 | 12.67 | 5 |
| Ignacio Agramunt Mendoza | Verbo Divino | 5 | | |
| Matías Gutiérrez Ginesta | Everest | 8 | | |
| Serie 4 |
| Sebastian Gutierrez Villagran | Saint Gabriel's School | 6 | 11.66 | 1 q |
| Nicolás Chubretovic Brünner | Monte Tabor | 2 | 11.90 | 2 q |
| Javier Reyes Severino | San Ignacio El Bosque | 7 | 12.07 | 3 |
| Agustin Zegers De La Maza | The Mayflower School | 8 | 12.49 | 4 |
| Juan Pablo Pumpin Missiego | Verbo Divino | 3 | 12.83 | 5 |
| Joaquin Anguita Espinosa | Saint George's College | 4 | | |
| Javier Villanueva Domínguez | Monte Tabor | 5 | | |
| Serie 5 |
| Benjamín Antonio Guzman Caroca | Polivalente Don Orione | 8 | 11.78 | 1 q |
| Vicente Rivera Urrutia | Verbo Divino | 6 | 12.12 | 2 |
| Nicolás Baltra Montes | San Anselmo | 5 | 12.15 | 3 |
| Tomas Del Valle Lagos | San Ignacio El Bosque | 3 | 12.16 | 4 |
| Jaime Fernández Benito | San Benito | 7 | 12.26 | 5 |
| Tomás Labbe Infante | San Anselmo | 2 | | |
| Jordi Gaspar Vincze | Maitenes | 4 | | |
| Serie 6 |
| Franco Solari Forte | SSCC Manquehue | 4 | 11.75 | 1 q |
| Estanislao Gacitua Sosa | The Mayflower School | 7 | 12.21 | 2 |
| Vicente Gregorio Rojas Valenzuela | Montessori de Talca | 8 | 12.34 | 3 |
| Martin Didyk Budinich | San Ignacio El Bosque | 5 | 12.43 | 4 |
| Agustín Caracci Vera | Everest | 2 | | |
| Ian Alex Samson Nilo | San Pedro Nolasco - Vitacura | 3 | | |
| Vicente Jimenez Pardo | Saint George's College | 6 | | |
