| Serie 1 V.V. +0.8 |
| Jose Miguel Orellana Lopez | Instituto Comercial La Cisterna | 4 | 11.15 | 1 q |
| Angel Eduardo Guevara Balza | Instituto O'Higgins de Rancagua | 2 | 11.47 | 7 q |
| Juan Ibañez Larrain | Cordillera | 3 | 11.47 | 9 q |
| Benjamín Lima Sánchez | Internacional SEK | 5 | 11.76 | 16 |
| Tomás Arenas Kutz | Tabancura | 1 | 12.08 | 26 |
| Cristoban Andres Dauvergne Seguel | Internacional SEK | 6 | 12.10 | 28 |
| Santiago De La Cuadra A | The Grange School | 8 | 12.11 | 29 |
| Matías Silva Carrasco | Saint Gabriel's School | 7 | DNS | |
| Serie 2 V.V. +1.0 |
| Martin Montesinos Lopez De Santa María | Saint George's College | 5 | 11.19 | 3 q |
| Luciano Serey Ibañez | Liceo Nuestra Señora del Rosario de Linares | 3 | 11.39 | 6 q |
| Nicolas Iriarte Tagle | Padre Hurtado y Juanita de los Andes | 6 | 11.47 | 8 q |
| Sebastian Rencoret Escala | Saint George's College | 4 | 11.62 | 13 |
| Domingo Mizon Jarpa | Santa Cruz - Chicureo | 1 | 12.06 | 24 |
| Manuel Guzman Garcia De La Huerta | Verbo Divino | 8 | 12.06 | 25 |
| Domingo Jimenez Pardo | Saint George's College | 7 | 12.11 | 30 |
| Guillermo Echeñique Sanchez | Cordillera | 2 | DNS | |
| Serie 3 V.V. +0.9 |
| Juan Vicente Rodriguez Flores | Padre Hurtado y Juanita de los Andes | 5 | 11.37 | 5 q |
| Vicente Andrés Lara Yanine | Alemán de Chillán | 4 | 11.56 | 12 |
| Fernando Vallejos Lopez | Colegio Los Alpes de Maipú | 2 | 11.75 | 15 |
| Vicente Yañez Maldonado | Padre Hurtado y Juanita de los Andes | 3 | 11.84 | 18 |
| Diego Giovanni Marchan Aravena | Saint Maurice’s | 7 | 11.85 | 19 |
| Theophane Dármand De Cheateveaux | San Francisco de Asís | 8 | 11.90 | 21 |
| Agustin Ossa Chaigneau | Huinganal | 1 | 12.00 | 23 |
| Clemente Fernandez Hurtado | Huinganal | 6 | 12.21 | 31 |
| Serie 4 V.V. +0.8 |
| Tomas Leon Valenzuela | SSCC Manquehue | 5 | 11.16 | 2 q |
| Tomas Pinto Muñoz | Cumbres | 7 | 11.30 | 4 q |
| Hernán Muñoz Silva | Tabancura | 6 | 11.67 | 14 |
| Martín Araneda Araneda | San Anselmo | 8 | 12.38 | 32 |
| Manuel Kraemer Rioseco | SSCC Manquehue | 1 | DNS | |
| Martin Astaburuaga Coddou | Verbo Divino | 2 | DNS | |
| Arturo Goldsack Salinas | Huinganal | 3 | DNS | |
| Vicente Zuñiga Ortiz | San Anselmo | 4 | DNS | |
| Serie 5 V.V. +0.6 |
| Juan José García Ovalle | Tabancura | 5 | 11.54 | 10 |
| Maximo Correa Montero | Everest | 6 | 11.55 | 11 |
| Benjamin Nicolas Ruiz Vasquez | San Ignacio El Bosque | 4 | 11.81 | 17 |
| Vicente Alfonso Coronado Acuña | San Ignacio El Bosque | 3 | 11.85 | 20 |
| Guillermo Tapia Hernandez | Escuela Industrial Salesianos La Serena | 2 | 11.98 | 22 |
| Shigeru Tsukame Bavestrello | Cordillera | 1 | 12.08 | 27 |
| Julio Bertrandt Velasco | SSCC Manquehue | 7 | DNS | |
| Diego Fuentes Muñoz | San José de Chicureo | 8 | DNS | |
