| Atleta | Colegio | Pista | Resultado | Lugar |
|---|---|---|---|---|
| Serie 1 | ||||
| Arturo Goldsack Salinas | Huinganal | 3 | 10.97 | 2 q |
| Joaquin Piderit Brito | Cordillera | 5 | 11.49 | 5 q |
| Felipe Andrade A | The Grange School | 4 | 12.02 | 8 |
| Santiago Hernán Perez Nova | San Anselmo | 6 | 12.25 | 9 |
| Sven Robert Jenschke Jordan | San Benito | 1 | DNS | |
| Domingo Cortinez Martinez | San José de Chicureo | 2 | DNS | |
| Serie 2 | ||||
| Pelayo Garcia Armas | San José de Chicureo | 3 | 10.87 | 1 q |
| Franco Antonio Stefoni Alcayaga | Andrée English School | 4 | 11.11 | 3 q |
| Ethan Jana A | The Grange School | 2 | 11.12 | 4 q |
| Martin Rosende Barros | Cordillera | 6 | 11.69 | 6 q |
| Manuel Widow Otaegui | Huinganal | 5 | 11.78 | 7 |
| Santiago Grohnert Morgan | San Benito | 1 | ||
