| Serie 1 V.V. +0.2 |
| Pablo Valdivia Hurtado | Saint George's College | 6 | 12.24 | 2 q |
| Vicente Leisewitz Muñoz | Cumbres | 3 | 12.33 | 3 q |
| Pedro Laso Donoso | San Ignacio El Bosque | 7 | 13.13 | 10 |
| Jose Tomas Quiroga Cortes | Tabancura | 8 | 13.51 | 18 |
| Cristian Valenzuela Moreno | Huinganal | 1 | DNS | |
| Vicente Julio Carrasco | Verbo Divino | 2 | DNS | |
| Ricardo Anwandter Fuenzalida | San Anselmo | 4 | DNS | |
| Juan Diego Covarrubias Undurraga | San Francisco de Asís | 5 | DNS | |
| Serie 2 V.V. +1.2 |
| Roman Preece Livingstone | Saint George's College | 8 | 12.06 | 1 q |
| Nicolas Quevedo Finlay | SSCC Manquehue | 5 | 12.38 | 4 q |
| Raimundo Velasco Barañao | Verbo Divino | 3 | 12.63 | 5 q |
| Sebastian Benjamin Nuñez Trepiana | San Anselmo | 4 | 12.97 | 8 q |
| Benjamín Otero Vial | Tabancura | 2 | 13.34 | 12 |
| Vicente Baltra Escobar | San Benito | 7 | 13.42 | 15 |
| Pedro Ignacio Alonso Widow | San Francisco de Asís | 6 | 14.40 | 24 |
| Juan Ignacio Martin Rodriguez | Huinganal | 1 | DNS | |
| Serie 3 V.V. +0.9 |
| Tomas Dittborn Woolvett | Cordillera | 3 | 12.65 | 6 q |
| Pedro Meleda Calvo | Everest | 8 | 12.67 | 7 q |
| Antonio Francisco Romero Wielandt | San Anselmo | 1 | 13.21 | 11 |
| Raimundo Vicari Torres | Saint George's College | 4 | 13.53 | 19 |
| Lucas Tyler Cabrera | Padre Hurtado y Juanita de los Andes | 5 | 13.97 | 21 |
| Pablo Martin Ureta | Monte Tabor | 2 | DNS | |
| Ethan Jana A | The Grange School | 6 | DNS | |
| Mateo Ferriere Reyes | Curimón - San Felipe | 7 | DNS | |
| Serie 4 V.V. +0.0 |
| Jose Tomas Larrain Vial | Cordillera | 8 | 13.42 | 16 |
| Domingo Cañas Etchegaray | San Ignacio El Bosque | 1 | 14.23 | 22 |
| Antonio Blanco Ortega | Cumbres | 2 | 15.00 | 25 |
| Ismael Felipe Browne Salinas | Monte Tabor | 7 | 15.72 | 27 |
| Jose Tomas Hojas Alliende | Padre Hurtado y Juanita de los Andes | 3 | DNS | |
| Jose Tomas Galvez Zuñiga | San Gennaro de Paine | 4 | DNS | |
| Maximiliano Nielsen Riveros | Curimón - San Felipe | 5 | DNS | |
| Pedro Montero De La Jara | Everest | 6 | DNS | |
| Serie 5 V.V. -0.2 |
| Tomas Prieto Noguera | Cordillera | 4 | 13.07 | 9 |
| León Somarriva Urzúa | Verbo Divino | 5 | 13.34 | 13 |
| José Clemente Chávez Zurita | Everest | 8 | 13.38 | 14 |
| Nicolas Monje Espinoza | San Ignacio El Bosque | 7 | 13.44 | 17 |
| Mauricio Buschmann Cambiasso | Cumbres | 2 | 13.79 | 20 |
| Felipe Cordova Retamal | Padre Hurtado y Juanita de los Andes | 6 | 14.30 | 23 |
| Vicente Felipe Rodríguez Oisel | San Francisco de Asís | 3 | 15.62 | 26 |
