Trek Overview
Location
Terrain and Conditions
The GR20 passes through Rocky, Mountain, Scrambling terrain. Climate conditions include Mediterranean Mountain, Hot Summer, Cold Nights. The route stays below significant altitude risk, reaching a maximum of 2,607m.
Permits and Logistics
No permit is required for this route. Porters are not typically available on this route — you carry your own gear.
Use the Trekax Pack Calculator to find your ideal pack weight for the GR20 — target the light packing profile at 8% of body weight.
Priority Gear for the GR20
Based on the terrain, climate, accommodation type, and altitude profile, these are the most important gear decisions for this route:
What Not to Bring
- Crampons or ice axe
- Heavy down jacket (fleece sufficient in warm zones)
See our complete packing list for the GR20 — every item category with budget and premium options.
View GR20 Packing List →Frequently Asked Questions
How long does the GR20 take?
The GR20 typically takes 14–16 days to complete, covering 180 km with 13,000m of elevation gain.
Is a permit required for the GR20?
No permit is required for the GR20.
When is the best time to trek the GR20?
The best months for the GR20 are Jun, Jul, Sep, during the Summer season window.
Do I need a guide for the GR20?
A guide is not mandatory for the GR20, though you should be comfortable with independent route-finding.
What is the altitude risk on the GR20?
The GR20 stays below significant altitude risk, reaching a maximum of 2,607m.
Are porters available on the GR20?
Porters are not typically available on the GR20 — you carry your own gear.