| Serie 1 |
| Nicolas Daudet Escobar | San Ignacio El Bosque | 4 | 11.07 | 1 q |
| Nicolas Iriarte Tagle | Padre Hurtado | 3 | 11.54 | 13 |
| Domingo Cortinez Martinez | San José de Chicureo | 5 | 11.68 | 19 |
| Vicente Yañez Maldonado | Padre Hurtado | 7 | 11.90 | 27 |
| Diego Giovanni Marchan Aravena | Saint Maurice’s | 6 | 12.14 | 36 |
| Andres Vergara Gana | Monte Tabor | 1 | 12.25 | 41 |
| Daniel Edmundo Mas Pizarro | Monte Tabor | 2 | 12.27 | 42 |
| Nicolás Alonso Vinagre Hernández | Trebulco School | 8 | DNS | |
| Serie 2 |
| Bruno Brufau A | Everest | 4 | 11.18 | 2 q |
| Marco Vaccarezza Flanega | Saint George's College | 3 | 11.58 | 15 |
| Diego Iacobelli Ovalle | Tabancura | 5 | 11.68 | 20 |
| Felipe Zanolli Izquierdo | Cumbres | 1 | 11.89 | 26 |
| Shigeru Tsukame Bavestrello | Cordillera | 7 | 11.96 | 32 |
| Martin Rosende Barros | Cordillera | 8 | 12.24 | 40 |
| Adrian Javier Gonzalez Rodriguez | Saint Maurice’s | 2 | 12.97 | 49 |
| Lucas Molinos Fernandez | Highlands | 6 | DNS | |
| Serie 3 |
| Juan Andres Concha Pinto | San Ignacio El Bosque | 3 | 11.43 | 7 q |
| Fernando Vallejos Lopez | Colegio Los Alpes de MaipĂş | 5 | 11.49 | 9 |
| Jose Miguel Orellana Lopez | Instituto Comercial La Cisterna | 4 | 11.52 | 11 |
| Carlos Titze Chimentti | Trebulco School | 6 | 11.80 | 23 |
| Juan Ignacio González Romero | Alemán de Santiago | 7 | 12.19 | 38 |
| Diego Felipe Perez Ortiz | Internacional SEK | 2 | 12.86 | 48 |
| Diego Roderick Charre Llocclla | Instituto Comercial La Cisterna | 1 | DNS | |
| Diego De Juan Muñoz | Sankt Thomas Morus | 8 | DNS | |
| Serie 4 |
| BenjamĂn Lima Sánchez | Internacional SEK | 3 | 11.55 | 14 |
| Ethan Jana A | The Grange School | 5 | 11.72 | 22 |
| Alberto Urquizar Naveillan | Huinganal | 6 | 11.90 | 28 |
| Benjamin Nicolas Ruiz Vasquez | San Ignacio El Bosque | 4 | 11.92 | 30 |
| Uri Daile Bass | La MisiĂłn de Calera de Tango | 8 | 12.12 | 35 |
| Vicente Sepulveda Cortes | Grace College | 1 | DNS | |
| Borja Balart Betinyani | San Francisco de AsĂs | 2 | DNS | |
| Tomás Cornejo Cabello | Highlands | 7 | DNS | |
| Serie 5 |
| Arturo Goldsack Salinas | Huinganal | 4 | 11.33 | 3 q |
| Domingo Matte Subercaseaux | Cordillera | 5 | 11.36 | 5 q |
| BenjamĂn Melo DĂaz Arana | Verbo Divino | 3 | 11.52 | 12 |
| Cristobal Alonso Garcia Ramirez | Grace College | 6 | 11.88 | 25 |
| Eduardo Matte Lama | Alemán de Santiago | 7 | 12.17 | 37 |
| Martin Molina Reyes | El Bosque - Puente Alto | 8 | 12.69 | 47 |
| Maximiliano Bosler Quintas | San José de Chicureo | 2 | 13.04 | 50 |
| Tomas Klett Puig | SSCC Manquehue | 1 | DNS | |
| Serie 6 |
| Tomas Pinto Muñoz | Cumbres | 5 | 11.35 | 4 q |
| Cristóbal Acuña Sánchez | Athletic Study Center | 3 | 11.63 | 17 |
| Theophane Dármand De Cheateveaux | San Francisco de AsĂs | 6 | 11.90 | 29 |
| Luca Bozzo Amenabar | Verbo Divino | 1 | 11.99 | 33 |
| Ignacio Lemus Caniullan | Monte Tabor | 2 | 12.19 | 39 |
| Felipe Andrade A | The Grange School | 8 | 12.49 | 45 |
| Juan Vicente Rodriguez Flores | Padre Hurtado | 4 | DNS | |
| Camilo Marcial Ibarra Oyarce | Instituto Alonso de Ercilla | 7 | DNS | |
| Serie 7 |
| Maximo Correa Montero | Everest | 4 | 11.45 | 8 q |
| Martin Castro Faret | Verbo Divino | 5 | 11.59 | 16 |
| Cristoban Andres Dauvergne Seguel | Internacional SEK | 6 | 12.10 | 34 |
| Vicente Solari Galecio | SSCC Manquehue | 2 | 12.32 | 43 |
| Juan Diego Arentsen Winter | Everest | 1 | DNS | |
| Santiago De La Cuadra A | The Grange School | 3 | DNS | |
| Alexander Ignacio Román Solar | Lycée Jean Mermoz | 7 | DNS | |
| Danko Miroslav Basic Flores | Montessori de Talca | 8 | DNS | |
| Serie 8 |
| Hernán Muñoz Silva | Tabancura | 4 | 11.51 | 10 |
| Beltran Ayala Urrejola | Saint George's College | 6 | 11.64 | 18 |
| Mauricio Buschmann Cambiasso | Cumbres | 5 | 11.92 | 31 |
| Gustavo Valderrama Leitao | Highlands | 8 | 12.61 | 46 |
| Nicolás Valenzuela Pizarro | San Francisco de AsĂs | 2 | DNS | |
| AgustĂn Ignacio Figueroa Cárdenas | Saint George's College | 3 | DNS | |
| Mariano Ignacio Cifuentes Orellana | Instituto Alonso de Ercilla | 7 | DNS | |
| Serie 9 |
| Juan Pablo Lyon Errázuriz | Tabancura | 4 | 11.39 | 6 q |
| Diego Moreno Lecaros | Huinganal | 5 | 11.70 | 21 |
| Sebastián Guerrero Carvallo | San Benito | 3 | 11.81 | 24 |
| MartĂn Araneda Araneda | San Anselmo | 7 | 12.39 | 44 |
| Santiago Loayza Diaz | Trebulco School | 6 | DNS | |
| Clemente Salinas Reyes | SSCC Manquehue | 2 | DNS | |
| Italo André Gutiérrez Alarcón | Instituto Alonso de Ercilla | 8 | DNS | |
