| Serie 1 |
| Matias Segovia Rubio | Padre Hurtado y Juanita de los Andes | 1 | 11.90 | 9 |
| Ignacio Jorrat Hartung | Cumbres | 5 | 12.06 | 11 |
| Felipe Mesa Pinto | San Ignacio El Bosque | 8 | 12.32 | 16 |
| Víctor José Regimio Moreno Angulo | De Santa María - El Monte | 7 | 12.34 | 17 |
| Borja Errazuriz Vergara | Cordillera | 2 | | |
| Victor Daniel Cortes Arriagada | Institución Teresiana | 3 | | |
| José Ignacio Piffaut Urzúa | San Anselmo | 4 | | |
| Agustín José Chávez Zurita | Everest | 6 | | |
| Serie 2 |
| Martín Montes Urrutia | Cumbres | 8 | 11.84 | 7 q |
| Diego Ivan Leyton Escauriaza | Institución Teresiana | 6 | 12.14 | 12 |
| Rafael Sebastian Campos Astudillo | Boston College | 1 | 12.40 | 18 |
| Domingo Ortuzar Bernales | San Anselmo | 2 | | |
| Agustin Silva Donoso | Cordillera | 3 | | |
| Guillermo Matta Hurtado | San Ignacio El Bosque | 4 | | |
| Gerónimo Prado Pizarro | Huelquén | 5 | | |
| Maximiliano Herrera Leigh | San Isidro | 7 | | |
| Serie 3 |
| Santiago Osses Cortes | SSCC Manquehue | 7 | 12.04 | 10 |
| Evenson Almazor Almazor | Casa de Talleres San Vicente de Paul | 4 | 12.21 | 13 |
| Ilan San Martin Kleinkopf | Instituto Hebreo | 3 | 12.24 | 14 |
| Sebastian Martin Duque Gonzalez | San Francisco de Paine | 6 | 12.30 | 15 |
| Gabriel Fuentes Cerda | Sankt Thomas Morus | 5 | 12.58 | 20 |
| Juan José Barrientos Duhalde | Calasanz | 2 | | |
| Vicente Sebastian Hernandez Acosta | Instituto Alonso de Ercilla | 8 | | |
| Serie 4 |
| Jose Agustin Irarrazaval Mainguyague | Tabancura | 4 | 11.37 | 2 q |
| Juan Pablo Cofre Celis | Verbo Divino | 3 | 11.51 | 5 q |
| Leon Clemente Walker Depassier | SSCC Manquehue | 7 | 11.87 | 8 q |
| Andrés Felipe Cruz Gaviria | Calasanz | 6 | 12.43 | 19 |
| Martín Araya Muñoz | Saint Maurice’s | 2 | | |
| Bastian Goldner Ortega | Alemán de Santiago | 5 | | |
| Sebastian Nuñez Rodillo | The Grange School | 8 | | |
| Serie 5 |
| Santiago Vial Ruiz Tagle | Tabancura | 4 | 11.26 | 1 q |
| Omar Eliecer Cifuentes Valencia | Liceo Salesiano Camilo Ortúzar Montt | 2 | 11.38 | 3 q |
| Martín Sáenz De Santa María Jarry | Everest | 6 | 11.48 | 4 q |
| Joaquín Araiki Vai Kava Aravena O'brien | Liceo de Música - Copiapo | 8 | 11.67 | 6 q |
| Dario Zurita Ferrada | The Angel's School | 3 | | |
| Matías Esteban Alfaro Méndez | The English Institute | 5 | | |
| Diego Edwards Rivero | Verbo Divino | 7 | | |
