| Serie 1 |
| Mateo Angel Ochoa | Saint Maurice’s | 2 | 11.62 | 1 q |
| Rodrigo Hasenberg Ballivian | Huinganal | 8 | 12.43 | 23 |
| Andres Antonio Astete Jaque | Marista - Diego Echeverría | 4 | 12.65 | 31 |
| Cristian Montes A | The Grange School | 7 | 12.66 | 32 |
| Cristóbal Palma Soto | San Francisco Javier de Huechuraba | 1 | 13.07 | 37 |
| Paulo Cortez Ciuffardi | Mayor - Peñalolen | 6 | 13.45 | 39 |
| Serie 2 |
| Enrique Bollmann Marinovic | Tabancura | 4 | 11.89 | 4 q |
| Vicente Medina Torres | Mayor - Peñalolen | 7 | 12.06 | 10 |
| Luciano Serey Ibañez | Liceo Nuestra Señora del Rosario de Linares | 8 | 12.21 | 17 |
| Gregorio Edwards Pérez | Sankt Thomas Morus | 3 | 12.24 | 19 |
| Carlos Nicolas Dominguez Dominguez | Marista - Diego Echeverría | 2 | 12.62 | 30 |
| Jose Pablo Encina Peralta | San Francisco Javier de Huechuraba | 1 | 13.14 | 38 |
| Serie 3 |
| Benjamín Mella Quezada | Tabancura | 5 | 12.40 | 22 |
| Martin Hayden Bobadilla | Sankt Thomas Morus | 7 | 12.52 | 25 |
| Vicente Russi Urrutia | San Francisco Javier de Huechuraba | 8 | 12.57 | 27 |
| Benjamín Pérez Malebrán | Mayor - Peñalolen | 2 | 12.79 | 34 |
| Serie 4 |
| Carlos Titze Chimentti | Trebulco School | 5 | 11.99 | 6 q |
| Ismael Felipe Browne Salinas | Monte Tabor | 3 | 12.06 | 11 |
| Santiago Ignacio Diaz Folsch | San Ignacio El Bosque | 4 | 12.14 | 16 |
| Jose Tomas Larrain Vial | Cordillera | 2 | 12.69 | 33 |
| Nicolas Vial Lecaros | Tabancura | 6 | 12.81 | 35 |
| Martin Cruzat Ramirez | The Mayflower School | 8 | 14.27 | 41 |
| Serie 5 |
| Juan Andres Concha Pinto | San Ignacio El Bosque | 2 | 11.86 | 3 q |
| Pablo Titze Chimenti | Trebulco School | 4 | 12.06 | 12 |
| Manuel Cabezón Bascuñán | Verbo Divino | 3 | 12.25 | 20 |
| Benjamin Diaz Latrach | The Mayflower School | 6 | 12.52 | 26 |
| Francisco José Tocornal Vargas | Monte Tabor | 8 | 13.57 | 40 |
| Serie 6 |
| Vicente Vergara Correa | Verbo Divino | 3 | 12.02 | 7 q |
| Gaspar Alonso Navarro Moreno | San Ignacio El Bosque | 2 | 12.03 | 8 q |
| Pedro Marín Garcés | Cordillera | 6 | 12.06 | 13 |
| Iñaki Pizarro Gazitúa | Pumahue | 5 | 12.08 | 14 |
| Maximo Correa Montero | Everest | 4 | 12.12 | 15 |
| Serie 7 |
| Pelayo Garcia Armas | San José de Chicureo | 8 | 11.68 | 2 q |
| Cristian Valenzuela Moreno | Huinganal | 3 | 11.91 | 5 q |
| Benjamín Melo Díaz Arana | Verbo Divino | 5 | 12.26 | 21 |
| Vincenzo Andrés Tabarroni Stier | Santo Domingo | 4 | 12.60 | 28 |
| Serie 8 |
| Pedro Navarrete Correa | Everest | 8 | 12.05 | 9 |
| Vicente Felipe Rodríguez Oisel | San Francisco de Asís | 7 | 12.21 | 18 |
| Renato Agustín Escalona Ulacia | Calasanz | 5 | 12.44 | 24 |
| Juan Ignacio González Romero | Alemán de Santiago | 2 | 12.61 | 29 |
| Antonio Moraga Castro | The Southern Cross School | 6 | 12.83 | 36 |
