| Atleta | Colegio | Pista | Resultado | Lugar |
|---|---|---|---|---|
| Serie 1 | ||||
| Felipe Antonio Allende Vinces | Alemán de Chillán | 5 | 12.09 | q |
| Santiago Cuvi Gazmuri | San Benito | 6 | 12.21 | q |
| Álvaro Montane Schorr | San Benito | 1 | 12.90 | (F.C.) |
| Sebastián Vidal Cáraves | San Anselmo | 3 | 13.12 | |
| Martin Rosende Barros | Cordillera | 2 | 13.28 | |
| Santiago Zañartu Pinto | Monte Tabor | 4 | DNS | |
| Serie 2 | ||||
| Vicente Andrés Lara Yanine | Alemán de Chillán | 2 | 11.71 | q |
| Theophane Dármand De Cheateveaux | San Francisco de Asís | 4 | 12.11 | q |
| Sven Robert Jenschke Jordan | San Benito | 5 | 12.36 | |
| Jose Manuel Del Piano Urrutia | Cordillera | 6 | 12.49 | |
| Richard Von Appen Terre | Everest | 3 | 12.56 | |
| Cristóbal Hempel Rojas | San Benito | 1 | 12.68 | |
| Serie 3 | ||||
| Nicolas Iriarte Tagle | Padre Hurtado | 2 | 11.84 | q |
| Julio Bertrandt Velasco | SSCC Manquehue | 5 | 12.30 | |
| Martín Villegas Vergara | San Francisco de Asís | 4 | 12.48 | |
| Santiago Leiva Mendez | San Ignacio El Bosque | 3 | 12.49 | |
| Santiago Grohnert Morgan | San Benito | 1 | 12.88 | (F.C.) |
| Domingo Perez Convalia | Everest | 6 | 14.34 | |
| Serie 4 | ||||
| Juan Vicente Rodriguez Flores | Padre Hurtado | 3 | 11.54 | q |
| Martín Araneda Araneda | San Anselmo | 2 | 12.72 | |
| Simon Ramm Pino | SSCC Manquehue | 4 | 13.23 | |
| Joaquín Carrasco Olivares | San Ignacio El Bosque | 5 | DNS | |
