| Roles | Competed in Olympic Games • Other | 
|---|---|
| Sex | Male | 
| Full name | Julio René•Martínez Sicán | 
| Used name | Julio René•Martínez | 
| Born | 27 September 1973 | 
| Measurements | 165 cm / 60 kg | 
| NOC |   Guatemala | 
Personal Bests: 20kmW – 1-17:46 (1999); 50kmW – 3-56:19 (2004).
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1996 Summer Olympics | Athletics |  GUA | 
Julio René Martínez | |||
| 20 kilometres Race Walk, Men (Olympic) | ||||||
| 2000 Summer Olympics | Athletics |  GUA | 
Julio René Martínez | |||
| 20 kilometres Race Walk, Men (Olympic) | 43 | |||||
| 2004 Summer Olympics | Athletics |  GUA | 
Julio René Martínez | |||
| 50 kilometres Race Walk, Men (Olympic) | 
| Games | Role | NOC | As | |
|---|---|---|---|---|
| 1996 Summer Olympics | Flagbearer at the Opening Ceremony |  GUA | 
Julio René Martínez |