| Serie 1 |
| Maximiliano Antonio Rios De La Cruz | Champagnat - Villa Alemana | 5 | 12.23 | 1 q |
| Facundo Subercaseaux Barrientos | Alemán de Valparaiso | 1 | 12.38 | 2 q |
| Martín Alberto Guerrero Urzúa | Aconcagua | 6 | 12.43 | 3 q |
| Imanol Herrera Altamirano | Alemán de Valparaiso | 7 | 12.55 | 4 q |
| Magnus Williams Vergara | Instituto Rafael Ariztía | 3 | 12.59 | 5 q |
| Benjamín Andrés Pizarro Aguilera | Capellán Pascal | 8 | 13.28 | 14 |
| Tomás Maximiliano Alvarez De La Fuente | Aconcagua | 4 | 13.43 | 15 |
| Lukas Bastidas Pérez | Liceo Parroquial San Antonio | 2 | 13.54 | 16 |
| Serie 2 |
| Felipe Merlet Ureta | Instituto Rafael Ariztía | 7 | 12.98 | 7 q |
| Vicente Guzman Morales | Instituto Rafael Ariztía | 4 | 12.99 | 8 q |
| Miguel Arnaiz Opazo | Montemar | 6 | 13.08 | 9 |
| Ignacio Schiappasacce Hernandez | Alemán de Valparaiso | 1 | 13.22 | 12 |
| Daniel Alonso Schiefelbein Muñoz | Champagnat - Villa Alemana | 3 | 13.26 | 13 |
| Benjamin Meneses Muñoz | Liceo Parroquial San Antonio | 5 | 13.57 | 17 |
| Renato Ignacio Erazo Vargas | Capellán Pascal | 8 | 14.15 | 23 |
| Francisco Mac Donald Guisado | Montemar | 2 | DQ | |
| Serie 3 |
| Gonzalo Vargas Mangel | The Mackay School | 5 | 12.96 | 6 q |
| Francisco Elgueta Pearce | The Mackay School | 4 | 13.11 | 10 |
| Nicolás Hernán Saavedra Pimentel | Liceo Parroquial San Antonio | 3 | 13.14 | 11 |
| Enzo Sole Ramella | Montemar | 2 | 13.74 | 18 |
| Martín Emilio Mercado Duarte | Champagnat - Villa Alemana | 7 | 13.81 | 19 |
| Joaquín Rubilar Garcia | The Mackay School | 1 | 13.89 | 20 |
| Felipe Heraldo Saez Cordoba | Aconcagua | 8 | 13.97 | 21 |
| Nataniel Alexis Caripan Andrades | Capellán Pascal | 6 | 14.06 | 22 |
