| Serie 1 |
| Matías Schaub Riveaux | Alemán de Santiago | 10.99 | 1 q |
| Cristian Vial Errazuriz | Tabancura | 11.05 | 2 q |
| Pedro Pablo Ovalle Ballacey | Padre Hurtado y Juanita de los Andes | 11.19 | 3 q |
| Joaquin Anguita Espinosa | Saint George's College | 11.23 | 4 q |
| Renato Van De Wyngard Saldias | San Anselmo | 11.55 | 5 |
| Gerardo García Rivera | Everest | | |
| Matias Baeza Vial | SSCC Manquehue | | |
| Nicolas Tejos Florenzano | Saint George's College | | |
| Serie 2 |
| Lautaro Benitez | Argentina | 11.04 | 1 q |
| Domingo Polette Barreau | San Anselmo | 11.17 | 2 q |
| Domingo Lazo Weiss | Carampangue | 11.24 | 3 |
| Santiago Aguilera Medina | Cordillera | 11.36 | 4 |
| Sebastian Celis Delard | Verbo Divino | 11.58 | 5 |
| Matías Benjamín Garetto Tapia | Verbo Divino | 11.65 | 6 |
| Juan Luis Eguiguren Zalaquett | Tabancura | | |
| Serie 3 |
| Joan Roberto Bordenave | Paraguay | 10.88 | 1 q |
| Benjamin Sepulveda Tighe | Padre Hurtado y Juanita de los Andes | 11.01 | 2 q |
| Franco Solari Forte | SSCC Manquehue | 11.38 | 3 |
| Martin Zabala Peralta | SSCC Manquehue | 11.39 | 4 |
| Agustín Soto Lafoy Meza | San Anselmo | 11.67 | 5 |
| Nicolás García-Huidobro Garling | San Benito | | |
| Agustín Ignacio Casanave Prat | Verbo Divino | | |
