| Serie 1 |
| Arturo Goldsack Salinas | Huinganal | 5 | 11.17 | 1 q |
| Angel Eduardo Guevara Balza | Instituto O'Higgins de Rancagua | 2 | 11.57 | 3 q |
| Benjamin Ignacio Tejos Florenzano | Everest | 1 | 11.70 | 7 q |
| Cristobal Godoy Villanueva | Manuel Larrain - CuricĂł | 4 | 11.71 | 8 q |
| Cristoban Andres Dauvergne Seguel | Internacional SEK | 3 | 11.81 | 11 |
| Benjamin Cancino Ponce | Instituto Premilitar de Chile | 7 | 12.02 | 17 |
| Julian Castillo Barrera | Instituto Chacabuco | 8 | DNS | |
| Domingo Mizon Jarpa | Santa Cruz - Chicureo | 6 | DNS | |
| Serie 2 |
| Alberto Urquizar Naveillan | Huinganal | 5 | 11.79 | 10 |
| Pablo Duque RodrĂguez | Everest | 3 | 12.10 | 20 |
| Facundo Vidal Garcia | Pumahue | 4 | 12.23 | 22 |
| Matias Marshall Toro | Santa Cruz - Chicureo | 8 | 12.41 | 28 |
| Cristobal Rojas Oyarce | Deportivo Luis Cruz MartĂnez | 1 | 12.64 | 35 |
| Christian Patricio Reinares Araneda | Instituto Alonso de Ercilla | 2 | DNS | |
| Jose Miranda Cuevas | Instituto O'Higgins de Rancagua | 6 | DNS | |
| Benjamin Tabach Socias | Cumbres | 7 | DNS | |
| Serie 3 |
| Fernando Vallejos Lopez | Colegio Los Alpes de MaipĂş | 6 | 11.61 | 5 q |
| Santiago Rodriguez Grass | Saint George's College | 8 | 11.75 | 9 |
| Tomás Arenas Kutz | Tabancura | 4 | 11.94 | 14 |
| Sebastian Goreux Figueroa | San José de Chicureo | 7 | 13.03 | 43 |
| MatĂas Montes Del RĂo | Cumbres | 1 | DNS | |
| Tomas Gabriel Kudrin Correa | Andrée English School | 2 | DNS | |
| Marc Anderson Donat Donat | Deportivo Luis Cruz MartĂnez | 3 | DNS | |
| Renato Castillo Palma | Instituto Alonso de Ercilla | 5 | DNS | |
| Serie 4 |
| Juan Pablo Lyon Errázuriz | Tabancura | 1 | 11.42 | 2 q |
| Diego Fuentes Muñoz | San José de Chicureo | 4 | 12.26 | 24 |
| Simon Francisco Poblete Rojas | Verbo Divino - Chicureo | 5 | 12.36 | 26 |
| Dante Saure Quinteros | Saint Gabriel's School | 3 | 12.37 | 27 |
| Matias Fernando Valenzuela Rodriguez | Escuela Atlética Ganbaru | 8 | 12.55 | 31 |
| Joaquin Hernandez Acevedo | Nuestra Señora del Camino | 2 | 13.90 | 50 |
| Jose Tomas Recabarren Cares | Padre Hurtado | 6 | DNS | |
| Martin Molina Reyes | El Bosque - Puente Alto | 7 | DNS | |
| Serie 5 |
| Domingo Iglesis Lagarreta | San Anselmo | 4 | 11.67 | 6 q |
| BenjamĂn GarcĂ©s Lemus | San Ignacio El Bosque | 7 | 12.06 | 18 |
| Woolf Berry Lessage Simeon | Escuela Atlética Ganbaru | 3 | 12.22 | 21 |
| Benjamin Villacura Targarona | Verbo Divino - Chicureo | 2 | 12.59 | 34 |
| Lucas Ignacio Donaire Foster | La MisiĂłn de Calera de Tango | 5 | DNS | |
| Arturo Salvo Elgueda | Nuestra Señora del Camino | 6 | DNS | |
| Humberto Peña Douglas | The Mayflower School | 8 | DNS | |
| Serie 6 |
| Martin Perez Urzua | San Ignacio El Bosque | 4 | 11.98 | 16 |
| Ignacio Pablo Del Prado Castagnoli | Greenhouse School | 2 | 12.74 | 38 |
| Simone Greene A | The Grange School | 5 | 12.76 | 40 |
| Ignacio Alejandro Cisternas Orellana | Marista - Diego EcheverrĂa | 8 | 12.80 | 41 |
| Franco Alejandro Basaez Guerra | The Greenland School | 3 | 13.00 | 42 |
| Daniel Lepeley Rubio | The Mayflower School | 6 | 13.45 | 46 |
| Jorge Ignacio Del RĂo Morales | San Anselmo | 7 | DNS | |
| Serie 7 |
| Delyum Anthuan Reizon De La Rosa Neira | Instituto Inglés de Curicó | 4 | 12.23 | 23 |
| Adrian Javier Gonzalez Rodriguez | Saint Maurice’s | 3 | 12.49 | 29 |
| José Tomás Diaz Betancourt | The Southern Cross School | 6 | 12.57 | 32 |
| Vicente Ahumada Becker | The Greenland School | 2 | 12.71 | 36 |
| Max Zuñiga Soto | The Grange School | 8 | 13.51 | 47 |
| Aron Franco Correa Leyton | Marista - Diego EcheverrĂa | 5 | 13.71 | 49 |
| BenjamĂn AndrĂ©s Aros Muñoz | Scuola Italiana - Vittorio Montiglio | 7 | DNS | |
| Serie 8 |
| Tobias Rieschel Arratia | Sankt Thomas Morus | 6 | 11.90 | 12 |
| BenjamĂn Meiss Contreras | Alemán de Santiago | 3 | 11.94 | 15 |
| Jose Tomás Jorquera Aspé | Monte Tabor | 2 | 12.09 | 19 |
| Vicente GarcĂa Loyola | Trebulco School | 7 | 12.51 | 30 |
| José Antonio Abarca Navarrete | Maitenes | 4 | 13.13 | 44 |
| Sebastián Miller Compagnoni | Scuola Italiana - Vittorio Montiglio | 5 | 13.58 | 48 |
| Pablo Mackenna Zegers | Verbo Divino | 8 | DNS | |
| Serie 9 |
| BenjamĂn Lima Sánchez | Internacional SEK | 4 | 11.59 | 4 q |
| Cristóbal Acuña Sánchez | Athletic Study Center | 3 | 11.90 | 13 |
| Pablo Ruiz Tal | Sankt Thomas Morus | 8 | 12.31 | 25 |
| Juan Cuevas Domange | Monte Tabor | 5 | 12.58 | 33 |
| Manuel Allard Greene | Verbo Divino | 6 | 12.73 | 37 |
| Maximo Rodriguez Guerra | Instituto Chacabuco | 7 | 12.75 | 39 |
| Gabriel Van Klaveren Herrmann | Alemán de Santiago | 2 | 13.18 | 45 |
