| Serie 1 |
| Leon Florenzano Errazuriz | Verbo Divino | 2 | 11.49 | 3 q |
| José Larraín García-Huidobro | Tabancura | 1 | 11.50 | 4 q |
| Clemente Velasco Cárcamo | Everest | 3 | 12.01 | 8 q |
| Nicolás Lewin Pacheco | San Benito | 7 | 12.53 | 11 |
| Diego Muñoz Silva | Tabancura | 5 | 12.64 | 13 |
| Vicente Leal Hernández | San Francisco Javier de Huechuraba | 4 | | |
| Santiago Lavin Donodo | Verbo Divino | 6 | | |
| Serie 2 |
| Gonzalo Aguirre Rossi | Cordillera | 8 | 11.30 | 1 q |
| Pedro Claro Irarrazaval | Cumbres | 4 | 11.95 | 6 q |
| Tomas Valeriano Hernando Edwards | San Anselmo | 1 | 12.29 | 10 |
| Iñigo Palacios Nazif | SSCC Manquehue | 5 | 12.84 | 16 |
| Nicholas Maclean Rodriguez | Padre Hurtado y Juanita de los Andes | 3 | 13.04 | 19 |
| Jose Antonio Coeymans Urrejola | Verbo Divino | 2 | 13.20 | 20 |
| Santiago Cuvi Gazmuri | San Benito | 6 | | |
| Ignacio Balmaceda Subercaseaux | Cordillera | 7 | | |
| Serie 3 |
| Marco Vaccarezza Flanega | Saint George's College | 3 | 11.42 | 2 q |
| Diego Quezada Aguila | San Anselmo | 4 | 11.52 | 5 q |
| Cristobal Undurraga Fuenzalida | Tabancura | 2 | 12.00 | 7 q |
| Domingo Lorenzini Kovacic | Padre Hurtado y Juanita de los Andes | 5 | 12.57 | 12 |
| Lucas Andres Monrabal | Everest | 8 | 12.87 | 17 |
| Borja Lecannelier Vuskovic | Padre Hurtado y Juanita de los Andes | 1 | 13.76 | 21 |
| Arturo Claro García | Cumbres | 6 | 14.39 | 22 |
| Martin Renato Gonzalez Gonzalez | Montessori de Talca | 7 | | |
| Serie 4 |
| Jose Ignacio Galan Charme | San Anselmo | 3 | 12.24 | 9 |
| Julio Bertrandt Velasco | SSCC Manquehue | 5 | 12.64 | 14 |
| Bruno Tiscornia Cruz | Del Valle | 7 | 12.79 | 15 |
| Manuel Arteaga Martínez | Saint George's College | 4 | 12.97 | 18 |
| Alberto García Ravera | Everest | 2 | | |
| Felipe Malfanti Leiva | SSCC Manquehue | 6 | | |
| Sebastian Rencoret Escala | Saint George's College | 8 | | |
