| Atleta | Colegio | Pista | Resultado | Lugar |
|---|---|---|---|---|
| Serie 1 | ||||
| Vicente Baltra Escobar | San Benito | 1 | 10.26 | 1 q |
| Agustín Varas Salinas | Tabancura | 5 | 11.13 | 2 q |
| Diego Iacobelli Ovalle | Tabancura | 2 | 11.17 (11.1692) | 3 q |
| Jose Tomas Del Campo Guerrero | San Ignacio El Bosque | 6 | 11.61 | 4 q |
| Diego Quezada Aguila | San Anselmo | 3 | 11.74 | 5 q |
| Felipe Correa Aspillaga | Cordillera | 4 | DNS | |
| Serie 2 | ||||
| Cristián Salinas Delano | Huinganal | 1 | 11.94 | 1 |
| Tomás Joannon Álamos | Tabancura | 5 | 15.50 | 2 |
| Benjamín Eduardo Cerda Macías | The English Institute | 2 | DNS | |
| Domingo Cañas Etchegaray | San Ignacio El Bosque | 3 | DNS | |
| Raimundo Toro Vidal | Everest | 4 | DNS | |
| Domingo Matte Subercaseaux | Cordillera | 6 | DNS | |
| Serie 3 | ||||
| Sebastián Guerrero Carvallo | San Benito | 3 | 10.62 | 1 q |
| Vicente Leal Hernández | San Francisco Javier de Huechuraba | 6 | 10.90 | 2 q |
| Alejandro Opitz Ceruti | Alemán de Santiago | 2 | 10.93 | 3 q |
| Vicente Zuñiga Ortiz | San Anselmo | 5 | 12.17 | 4 |
| Diego Eguiguren Valenzuela | Everest | 4 | DNS | |
| Serie 4 | ||||
| Sebastian Benjamin Nuñez Trepiana | San Anselmo | 3 | 10.94 | 1 q |
| Juan Ignacio Martin Rodriguez | Huinganal | 5 | 11.15 | 2 q |
| Juan Domingo Allamand Darrigrandi | San Benito | 6 | 11.17 (11.1696) | 3 q |
| Martin Mondaca Fellenberg | San Ignacio El Bosque | 4 | 11.63 | 4 q |
| Sebastian Huber Garcia | Everest | 2 | DNS | |
