| Serie 1 |
| Tomas Leon Valenzuela | SSCC Manquehue | 4 | 11.10 | 1 q |
| Cristóbal Acuña Sánchez | Athletic Study Center | 5 | 11.73 | 14 |
| Juan Enrique Echeverria Durán | San Ignacio El Bosque | 1 | 12.11 | 25 |
| Tomás Arenas Kutz | Tabancura | 3 | 12.14 | 28 |
| Dario Cabezas Aranda | El Boldo | 6 | 12.28 | 33 |
| José Antonio Abarca Navarrete | Maitenes | 7 | 13.11 | 55 |
| Marcel León Yañez | Saint Gabriel's School | 8 | 13.65 | 61 |
| Carlos Augusto Sabugal Mendia | Everest | 2 | DNS | |
| Serie 2 |
| Marc Anderson Donat Donat | Colegio Deportivo Luis Cruz Martínez | 4 | 11.26 | 2 q |
| Xing Jie Lucas Lu Flores | Mayor - Peñalolen | 3 | 12.15 | 29 |
| Ignacio Lindh Salinas | Padre Hurtado y Juanita de los Andes | 1 | 12.26 | 32 |
| Emilio Detmer Coimbra | Everest | 6 | 12.52 | 41 |
| Diego Purcell Capdeville | Saint George's College | 2 | 12.54 | 42 |
| José Miguel Sebastián Calderón Valdevenito | Verbo Divino - Chicureo | 7 | 12.86 | 52 |
| Dante Saure Quinteros | Saint Gabriel's School | 8 | 13.37 | 58 |
| Santiago De La Cuadra A | The Grange School | 5 | DNS | |
| Serie 3 |
| Vicente Andrés Lara Yanine | Alemán de Chillán | 5 | 11.41 | 5 q |
| Angel Eduardo Guevara Balza | Instituto O'Higgins de Rancagua | 4 | 11.59 | 9 |
| Victor Llanos Angulo | Cumbres de Labranza - Temuco | 3 | 11.95 | 18 |
| Martín Villegas Vergara | San Francisco de Asís | 6 | 12.19 | 31 |
| Valentin Orellana Ortiz | Escuela Atlética Ganbaru | 7 | 12.97 | 53 |
| Gabriel Van Klaveren Herrmann | Alemán de Santiago | 2 | 13.56 | 60 |
| Lucas Ignacio Donaire Foster | La Misión de Calera de Tango | 8 | 13.84 | 62 |
| Jose Fernandez Hidalgo | Saint George's College | 1 | DNS | |
| Serie 4 |
| Juan Pablo Lyon Errázuriz | Tabancura | 8 | 11.46 | 7 q |
| Juan Ibañez Larrain | Cordillera | 4 | 11.47 | 8 q |
| Fernando Vallejos Lopez | Colegio Los Alpes de Maipú | 5 | 11.59 | 10 |
| Alberto Urquizar Naveillan | Huinganal | 2 | 11.86 | 15 |
| Manuel Guzman Garcia De La Huerta | Verbo Divino | 3 | 11.97 | 20 |
| Tomas Zamorano Bonomo | Inmaculada Concepción de Vitacura | 6 | 12.49 | 40 |
| Juan Cuevas Domange | Monte Tabor | 7 | 12.63 | 46 |
| Matias Fernando Valenzuela Rodriguez | Escuela Atlética Ganbaru | 1 | 12.77 | 49 |
| Serie 5 |
| Arturo Goldsack Salinas | Huinganal | 4 | 11.32 | 3 q |
| Diego Fuentes Muñoz | San José de Chicureo | 3 | 12.07 | 23 |
| Tobias Rieschel Arratia | Sankt Thomas Morus | 6 | 12.29 | 35 |
| Tomas Cave Jordan | Padre Hurtado y Juanita de los Andes | 8 | 12.58 | 44 |
| Juan Andres Oyarzun Nualart | Padre Hurtado y Juanita de los Andes | 1 | 12.78 | 50 |
| Matias Rivero Chamorro | Internacional SEK | 2 | 13.07 | 54 |
| Guillermo Tapia Hernandez | Escuela Industrial Salesianos La Serena | 5 | DNS | |
| Francisco Izquierdo Dettwiler | San Benito | 7 | DNS | |
| Serie 6 |
| Martin Astaburuaga Coddou | Verbo Divino | 4 | 11.37 | 4 q |
| Cristobal Godoy Villanueva | Manuel Larrain - Curicó | 5 | 11.63 | 12 |
| Benjamín Lima Sánchez | Internacional SEK | 3 | 11.71 | 13 |
| Domingo Iglesis Lagarreta | San Anselmo | 8 | 12.12 | 26 |
| Joaquín Carrasco Olivares | San Ignacio El Bosque | 7 | 12.13 | 27 |
| Tomas Gabriel Kudrin Correa | Andree English School | 1 | 12.69 | 47 |
| Pascal Andrés Belmar Palacios | Andree English School | 2 | DNS | |
| Richard Von Appen Terre | Everest | 6 | DNS | |
| Serie 7 |
| Clemente Franken Zaldivar | Verbo Divino | 4 | 11.42 | 6 q |
| André Ignacio Saldías Méndez | Centenario de Temuco | 5 | 11.99 | 21 |
| Rafael Vallejos Marín | San Ignacio El Bosque | 1 | 12.17 | 30 |
| Clemente Fernandez Hurtado | Huinganal | 3 | 12.34 | 36 |
| Martin Molina Reyes | El Bosque - Puente Alto | 2 | 12.57 | 43 |
| Alberto Arriagada Iacobelli | San Francisco de Asís | 7 | 13.32 | 57 |
| Martin Alonso Medel Bustamante | Instituto Santa María - Chillán | 6 | DNS | |
| Cristobal Lyon Lanz | San Anselmo | 8 | DNS | |
| Serie 8 |
| Pedro Pablo Canahuate Muñoz | Alemán de Chillán | 4 | 11.90 | 16 |
| Diego Arroyo Cisternas | Alborada del Mar | 8 | 12.05 | 22 |
| Benjamín Meiss Contreras | Alemán de Santiago | 6 | 12.36 | 37 |
| Maximiliano Imperatore Correa | San Pedro Nolasco - Vitacura | 2 | 12.38 | 38 |
| Benjamin Mendoza Burgos | Alborada del Mar | 7 | 12.80 | 51 |
| Jose Miranda Cuevas | Instituto O'Higgins de Rancagua | 3 | DNS | |
| Martin Saint Jean Riquelme | Instituto San Martín - Curicó | 5 | DNS | |
| Serie 9 |
| Hernán Muñoz Silva | Tabancura | 4 | 11.61 | 11 |
| Cristoban Andres Dauvergne Seguel | Internacional SEK | 5 | 11.91 | 17 |
| Cristóbal Hempel Rojas | San Benito | 3 | 11.95 | 19 |
| Joaquin Andres Mena Gil | San Pedro Nolasco - Vitacura | 6 | 12.45 | 39 |
| Jose Tomás Jorquera Aspé | Monte Tabor | 2 | 12.70 | 48 |
| Emilio Belosapkin Cotapos | Epullay Montessori | 7 | 13.24 | 56 |
| Jorge Ignacio Del Río Morales | San Anselmo | 8 | DNS | |
| Serie 10 |
| Shigeru Tsukame Bavestrello | Cordillera | 5 | 12.07 | 24 |
| Benjamin Alvarez Cofre | Cordillera | 3 | 12.28 | 34 |
| Pablo Ruiz Tal | Sankt Thomas Morus | 6 | 12.58 | 45 |
| Julián Antonio Cancino Egger | Instituto O'Higgins de Rancagua | 7 | 13.54 | 59 |
| Arturo Esteban Pizarro Henriquez | Marista - Diego Echeverría | 2 | 14.50 | 63 |
| Marco Vaccarezza Flanega | Saint George's College | 4 | DNS | |
| Baltazar Perelló Burr | Monte Tabor | 8 | DNS | |
