| Serie 1 |
| Damian Mingo Colvin | Trebulco School | 6 | 12.24 | 8 q |
| Iskandar Mahmud Buale Garetto | Craighouse School | 8 | 12.51 | 14 |
| Martín Ignacio Gonzalez Carrasco | Dunalastair - Peñalolén | 5 | 12.63 | 16 |
| Santiago Anabalón Ortega | Saint Gabriel's School | 4 | 12.92 | 21 |
| Santiago Arenas Valenzuela | Dunalastair - Chicureo | 3 | 12.93 | 22 |
| Juan Pablo Toro Munita | Orchard College | 7 | 13.97 | 27 |
| Sebastian Sanz Cifuentes | The Mayflower School | 1 | 15.33 | 28 |
| Nicolas Aguirre Osses | Dunalastair - Las Condes | 2 | DNS | |
| Joaquín Tapia Uribe | Dunalastair - Chicureo | 3 | | |
| Serie 2 |
| Emilio Retamal Guajardo | Trebulco School | 7 | 11.68 | 1 q |
| Arturo Ávila Pinto | Craighouse School | 4 | 12.21 | 7 q |
| Martin Alejandro Figueroa Farias | Dunalastair - Peñalolén | 1 | 12.48 | 12 q |
| Ignacio Campero Ansoleaga | Santiago College | 2 | 12.67 | 17 |
| Bruno Ignacio Poblete Le-Bert | The Wessex School - Concepción | 6 | 12.73 | 20 |
| Agustin Gimenez Mella | Orchard College | 5 | 13.58 | 26 |
| Borja Galaz Canepa | Santiago College | 2 | | |
| Pedro Nazal A | The Grange School | 3 | DNS | |
| Pedro Elizalde Allende | Dunalastair - Las Condes | 8 | DNS | |
| Serie 3 |
| Franco Guissepe Marchini Rudloff | Bradford School | 4 | 11.68 | 2 q |
| Nicolás Valderrama Serra | Craighouse School | 5 | 11.97 | 3 q |
| Mariano Tudela Cabello | Dunalastair - Peñalolén | 6 | 11.99 | 4 q |
| Santiago Marin Morra | The Mackay School | 3 | 12.02 | 5 q |
| Pablo Cesar Ruíz Neira | The Wessex School - Concepción | 1 | 12.67 | 18 |
| Vicente Gassman Jarpa | The Grange School | 7 | 12.70 | 19 |
| Borja Blas Vieli | Santiago College | 2 | DNS | |
| Domingo Leddy Campino | Bradford School | 4 | | |
| Silvestre Pilasi Albertz | Craighouse School | 5 | | |
| Ignacio Alejandro Cisternas Cerda | Dunalastair - Peñalolén | 6 | | |
| Serie 4 |
| Sei Hernandez Serizawa | Saint Gabriel's School | 6 | 12.09 | 6 q |
| Cristóbal Felipe Castelli Izquierdo | The Wessex School - Concepción | 2 | 12.31 | 9 |
| Bruno Spier García | Dunalastair - Chicureo | 3 | 12.35 | 10 |
| Hernan Jesus Vizcarra Zenteno | The Mackay School | 5 | 12.53 | 15 |
| Max Meneses Giacoman | Bradford School | 1 | 13.30 | 25 |
| Ignacio Paredes De La Piedra | Bradford School | 1 | | |
| Franco Gabrielli Llevaneras | Santiago College | 4 | | |
| Borja Wood A | The Grange School | 7 | | |
| Serie 5 |
| Jose Tomas Villarroel Massardo | Trebulco School | 7 | 12.41 | 11 |
| Angelo Ignacio Cavallo Vidal | The Mackay School | 5 | 12.48 | 13 |
| Hezio Kanda Salas | Saint Gabriel's School | 1 | 13.08 | 23 |
| Tomás Cristóbal Valdés Berdicheswsky | Bradford School | 3 | 13.10 | 24 |
| Baltazar Galofré Cruz | Dunalastair - Las Condes | 2 | | |
| Vicente Alfonso Cabrera Martinez | Bradford School | 3 | | |
| Pablo Sanchez Espinosa | Orchard College | 4 | | |
