The GR20 Trail is a long-distance trail in Europe. The letters "GR" are the initials of the term "Grande Randonée", which means Great Trail in French, and the number "20" was the old postcode used for the Corsica Island. This postcode has now changed, but the traditional trail name remains the same.

The whole trail is about 180 km long and crosses the island from north, in Calenzana commune, to south, in Conca.

Corsica is an island situated in the Mediterranean Sea, southeast of French mainland, north of the Italian island of Sadinia, and west of the Italian Peninsula.

The island has amazing landscapes, composed by mountains, lakes, abundant vegetation, and a majestic forests.

Itinerary

The classic path from Calenzana to Conca can be completed in 15 days, with daily walks from 5 to 8 hours per day. The following table shows the classic itinerary:

Source: Parc Naturel Régional de Corse

Best Season

In winter (between February and April), the GR 20 can be only crossed by cross-country skiers with a high mountain guide. In the months of November, December, and May there the mountains are covered by snow, making the trail dangerous.

The best time to go to the GR20 trek is late June and early September, when the weather is mild and the trail is less crowded than in July or August.

Climate

The following table shows Corsica's minimum and maximum temperatures during the year.

Source: climatesetvoyages.com

Accommodation

You can sleep in a Mountain hut (refuge) or in a bivouac in facilities established on the trail. Sleeping in tent nearby the refuges is possible, but along the trail it is not permitted.

Food Supply

It is possible to take meals in all the GR20 shelters, including breakfast, lunch, and dinner. But you may wish to do the GR20 in total autonomy, in this case you can transport and cook your own meals.

The GR20 trail is a great experience for those who love long treks and beautiful mountains, and is the dream of many adventurers.