| Atleta | Colegio | Pista | Resultado | Lugar |
|---|---|---|---|---|
| Serie 1 | ||||
| Alessandro Aburto Albasini | SSCC Manquehue | 2 | 10.50 | 5 q |
| Patricio Busquet Llona | San Benito | 5 | 10.75 | 10 q |
| Santiago Bengolea Valenzuela | Highlands | 4 | 11.13 | 12 |
| Jose Tomas Biancani Gana | Monte Tabor | 1 | 12.04 | 14 |
| Samuel Frias Bezmalinovic | Everest | 3 | DNS | |
| Serie 2 | ||||
| Cristóbal Riesco Carrasco | Everest | 4 | 9.71 | 1 q |
| Francisco Caparros Fuentes | SSCC Manquehue | 2 | 10.26 | 3 q |
| José Pedro Labbé Köhler | San Benito | 5 | 10.52 | 6 q |
| Vicente Molinos Fernandez | Highlands | 1 | DNS | |
| Diego Undurraga García-Huidobro | Monte Tabor | 3 | DNS | |
| Serie 3 | ||||
| Lucas Palacios Nazif | SSCC Manquehue | 5 | 9.96 | 2 q |
| Benjamín Ovalle Bañados | Everest | 2 | 10.72 | 9 q |
| Maximiliano Arroyo Valdés | San Benito | 4 | 10.76 | 11 |
| Martin Ferrer Taricco | Highlands | 1 | DNS | |
| Cristóbal Peirano Deck | Monte Tabor | 3 | DNS | |
| Serie 4 | ||||
| Santiago Wood Lewin | SSCC Manquehue | 1 | 10.42 | 4 q |
| Juan Pablo Piretta Pozzolo | San Benito | 2 | 10.56 | 7 q |
| José Pedro Widoycovic Herrera | Everest | 3 | 10.63 | 8 q |
| Carlos Urzua Aristia | Monte Tabor | 4 | 12.03 | 13 |
| Felix Bardon De La Fuente | Highlands | 5 | DNS | |
