| Atleta | Colegio | Pista | Resultado | Lugar |
|---|---|---|---|---|
| Serie 1 | ||||
| Juan Pablo Lyon Errázuriz | Tabancura | 3 | 11.62 | 1 q |
| Agustín Ignacio Figueroa Cárdenas | Saint George's College | 1 | 12.01 | 4 q |
| Sven Robert Jenschke Jordan | San Benito | 2 | 12.24 | 5 q |
| Santiago Grohnert Morgan | San Benito | 5 | 12.47 | 6 q |
| Vicente Baltra Escobar | San Benito | 4 | DNS | |
| Vicente Moraga Inzunza | Instituto Chacabuco | 6 | DNS | |
| Serie 2 | ||||
| Hernán Muñoz Silva | Tabancura | 3 | 11.62 | 2 q |
| Pedro Ovalle Bascuñán | Tabancura | 4 | 11.85 | 3 q |
| Manuel Arteaga Martínez | Saint George's College | 2 | DNS | |
| Clemente Salinas Reyes | SSCC Manquehue | 5 | DNS | |
| Jose Fernandez Hidalgo | Saint George's College | 6 | DNS | |
