| Sex | Athlete | DOB | Discipline | Round | POS | Mark |
|---|---|---|---|---|---|---|
| M | Benjamin Ignacio MUÑOZ MELO | 09/08/2005 | Hammer Throw (6kg) | Qualification | 15 | 61.02 |
| M | Cipriano Ernesto RIQUELME | 15/02/2005 | Hammer Throw (6kg) | Qualification | 13 | 65.11 |
| W | Antonia Belen RAMIREZ | 03/12/2005 | 100 Metres | Heats | 8 | 12.15 |
| M | Benjamin Ignacio ARAVENA | 19/08/2005 | 100 Metres | Heats | 2 | 10.45 |
| M | Lucas Alberto JARA | 11/03/2005 | 800 Metres | Heats | 6 | 1:51.41 |
| M | Benjamin Ignacio ARAVENA | 19/08/2005 | 100 Metres | Semi-Final | 5 | 10.59 |
| Sex | Athlete | DOB | Discipline | Round | POS | Mark |
|---|---|---|---|---|---|---|
| M | Ramón FUENZALIDA | 07/07/2006 | 400 Metres Hurdles | Heats | 2 | 52.58 |
| M | Cristóbal SAHURIE | 10/01/2006 | High Jump | Qualification | 8 | 2.00 |
| Sex | Athlete | DOB | Discipline | Round | POS | Mark |
|---|---|---|---|---|---|---|
| W | Catalina ROZAS | 14/11/2006 | 100 Metres Hurdles | Heats | 3 | 13.84 |
| M | Ramón FUENZALIDA | 07/07/2006 | 110m Hurdles (99.0cm) | Heats | 8 | 14.49 |
| W | Antonia Belen RAMIREZ | 03/12/2005 | 200 Metres | Heats | 6 | 24.47 |
| M | Benjamin Ignacio ARAVENA | 19/08/2005 | 200 Metres | Heats | 4 | 21.44 |
| W | Catalina ROZAS | 14/11/2006 | 100 Metres Hurdles | Semi-Final | 7 | 13.88 |
| M | Benjamin Ignacio ARAVENA | 19/08/2005 | 200 Metres | Semi-Final | 8 | 21.55 |
| Sex | Athlete | DOB | Discipline | Round | POS | Mark |
|---|---|---|---|---|---|---|
| M | Alan Jonh FELL MARDONES | 16/02/2005 | Discus Throw (1.750kg) | Qualification | 12 | 55.20 |
| W | Chile U20 | 4x100 Metres Relay | Heats | 5 | 46.15 | |
| M | Chile U20 | 4x100 Metres Relay | Heats | 6 | 41.62 | |
| M | Ramón FUENZALIDA | 07/07/2006 | 400 Metres Hurdles | Semi-Final | 2 | 51.33 |
| Sex | Athlete | DOB | Discipline | Round | POS | Mark |
|---|---|---|---|---|---|---|
| M | Ramón FUENZALIDA | 07/07/2006 | 400 Metres Hurdles | Final | DQ |