| Serie 1 |
| Alonso Hormazabal Covarrubias | Instituto Chacabuco | 2 | 11.63 | 6 q |
| Diego Vial Fleishmann | Cordillera | 6 | 11.90 | 9 |
| Jose Domingo Covarrubias Undurraga | San Francisco de AsÃs | 8 | 12.10 | 13 |
| Pedro Cestau Ortega | Huinganal | 3 | 12.90 | 18 |
| Santiago Fito San Martin | Internacional SEK | 1 | DNS | |
| Diego Fornaro Kast | Campanario - Buin | 4 | DNS | |
| Juan José Guevara Del Sante | San Benito | 5 | DNS | |
| Santiago Mazurett Contreras | SSCC Alameda | 7 | DNS | |
| Serie 2 |
| Vicente Acosta Cifuentes | Alemán de Santiago | 6 | 11.28 | 2 q |
| Mateo Arancibia Estebanez | San Benito | 7 | 11.72 | 7 q |
| Anibal Errazuriz Morelli | Verbo Divino | 4 | 12.01 | 11 |
| Bernardo Alamos Opazo | Cordillera | 2 | 12.95 | 19 |
| Fernando Alonso Cordero Bratti | Campanario - Buin | 3 | 13.20 | 24 |
| Mauricio Lizama San Martin | SSCC Alameda | 8 | 13.34 | 25 |
| Manuel Ariztia Ceroni | Monte Tabor | 5 | 15.54 | 30 |
| Juan Andrés Mayol Vial | San Francisco de AsÃs | 1 | DNS | |
| Serie 3 |
| Felipe Novoa Gillet | Verbo Divino | 4 | 11.01 | 1 q |
| Maximiliano Meiss Contreras | Alemán de Santiago | 6 | 12.11 | 14 |
| Sebastian Meier Montano | Cordillera | 5 | 12.30 | 15 |
| AgustÃn Doña Rojas | San Francisco de AsÃs | 1 | 13.00 | 22 |
| Tomás Forteza Niklischek | Monte Tabor | 2 | DNS | |
| Juan Domeyko Hederra | Cumbres | 3 | DNS | |
| Renato Guerra San Martin | Saint John's Villa Academy | 7 | DNS | |
| Tomás Hayler Browne | San Benito | 8 | DNS | |
| Serie 4 |
| Bruno Valdes Marinetti | Saint George's College | 8 | 11.73 | 8 q |
| Anibal José Matte Chomón | Monte Tabor | 3 | 11.98 | 10 |
| Teodoro Koehler Montero | Verbo Divino | 2 | 12.02 | 12 |
| MartÃn Barranco Guzman | Cumbres | 5 | 12.46 | 16 |
| Luciano Alonso BerrÃos Gaete | Instituto Alonso de Ercilla | 7 | 13.93 | 26 |
| Leonardo Lepori Ortiz | Saint John's Villa Academy | 1 | DNS | |
| Jorge Bullemore Iriarte | San Anselmo | 4 | DNS | |
| Felipe Sahli Fischer | Tabancura | 6 | DNF | |
| Serie 5 |
| Manuel Pérez Faverio | Saint George's College | 2 | 11.57 | 5 q |
| Jose Vial Vial | Tabancura | 7 | 12.64 | 17 |
| Tomas Lyon Letelier | San Anselmo | 3 | 12.96 (12.9600) | 20 |
| Borja Errazuriz Salinas | Huinganal | 4 | 14.64 | 29 |
| Demetrio Benito Petrinovic | Saint John's Villa Academy | 5 | DNS | |
| José Manuel Opazo Ramos | SSCC Manquehue | 6 | DNS | |
| Fernando Andrés Cubillos Arredondo | Instituto Alonso de Ercilla | 8 | DNS | |
| Serie 6 |
| José Francisco Coeymans Puig | Tabancura | 3 | 11.32 | 3 q |
| Diego Simón Zamudio Márquez | Instituto Alonso de Ercilla | 7 | 11.43 | 4 q |
| Agustin Espinoza Munita | Huinganal | 8 | 12.96 (12.9600) | 21 |
| Julian Hurtado Artus | San Anselmo | 6 | 13.08 | 23 |
| Matias Pedro Ignacio Atalah Delgado | Alemán de Villarrica | 5 | 14.11 | 27 |
| Santiago Orellana Merino | Campanario - Buin | 4 | 14.55 | 28 |
| Lucas Davidson Landon | SSCC Manquehue | 2 | DNS | |
