| Serie 1 |
| Tomás Arenas Kutz | Tabancura | 7 | 11.36 | 3 q |
| Martin Perez Urzua | San Ignacio El Bosque | 1 | 11.56 | 7 q |
| Guillermo Tapia Hernandez | Escuela Industrial Salesianos La Serena | 5 | 11.60 | 8 q |
| Clemente Fernandez Hurtado | Huinganal | 2 | 11.61 | 9 |
| Mateo Andrés Robles Yañes | San Viator - Ovalle | 4 | 12.04 | 18 |
| Sebastián Miller Compagnoni | Scuola Italiana - Vittorio Montiglio | 3 | 12.79 | 23 |
| Gabriel Sepulveda Mora | Sankt Thomas Morus | 6 | DNS | |
| BenjamÃn Meiss Contreras | Alemán de Santiago | 8 | DNS | |
| Serie 2 |
| Joaquin Moraga Echeverria | Verbo Divino | 2 | 11.45 | 6 q |
| Tomás Javier Rivera Céspedes | Instituto La Salle | 1 | 11.67 | 10 |
| Diego Illanes Zamorano | SSCC Manquehue | 3 | 11.92 | 13 |
| Tomas Osorio Llenas | Internacional SEK | 7 | 11.93 | 14 |
| Francisco Larrain Jorquera | Tabancura | 8 | 11.99 | 17 |
| Gabriel Van Klaveren Herrmann | Alemán de Santiago | 4 | 12.19 | 20 |
| Franco Alejandro Basaez Guerra | The Greenland School | 5 | DNS | |
| Ricardo Reyes Severino | San Ignacio El Bosque | 6 | DNS | |
| Serie 3 |
| Juan Ibañez Larrain | Cordillera | 1 | 11.29 | 1 q |
| Pablo Mackenna Zegers | Verbo Divino | 3 | 11.35 | 2 q |
| Kanai Andres Godoy Bahamondez | Francisco de Miranda | 2 | 11.39 | 4 q |
| Lucas Valdés Vyhmeister | Saint Gaspar College | 5 | 11.41 | 5 q |
| Benjamin Tabach Socias | Cumbres | 6 | 11.67 | 11 |
| JoaquÃn Carrasco Olivares | San Ignacio El Bosque | 4 | 11.93 | 15 |
| Bruno Raimann Sauma | The Grange School | 7 | DNS | |
| Kurt Voss Aylwin | De La Salle | 8 | DNS | |
| Serie 4 |
| Martin Molina Reyes | El Bosque - Puente Alto | 2 | 11.97 | 16 |
| Aurelio Fernandez Baeza | Cumbres | 7 | 12.14 | 19 |
| Dante Saure Quinteros | Saint Gabriel's School | 5 | 12.24 | 21 |
| Sebastian Goreux Figueroa | San José de Chicureo | 4 | 13.16 | 24 |
| JoaquÃn Ignacio Regifo Larrain | Alemán Chicureo | 1 | DNS | |
| Williams Charles Núñez DÃaz | Kairos | 3 | DNS | |
| Matias Mitchell Acevedo | De La Salle | 6 | DNS | |
| Nicolas Morgan Dominguez | Verbo Divino | 8 | DNS | |
| Serie 5 |
| Arturo Raby Carvajal | Huinganal | 3 | 11.86 | 12 |
| AgustÃn Ignacio Cárdenas Illesca | Verbo Divino - Chicureo | 4 | 12.46 | 22 |
| Joaquin Maldonado Reyes | De La Salle | 6 | 13.32 | 25 |
| Juan José GarcÃa Ovalle | Tabancura | 1 | DNS | |
| Lucas Ignacio Donaire Foster | La Misión de Calera de Tango | 2 | DNS | |
| Tomás Pfeffer Tocornal | Cumbres | 5 | DNS | |
| Tobias Rieschel Arratia | Sankt Thomas Morus | 7 | DNS | |
