An introduction to trekking the GR20 Corsica
Corsica's celebrated GR20 is considered one of the most difficult of Europe's GR long-distance routes, traversing isolated mountain terrain with steep rocky ground that frequently calls for hands-on scrambling. But the rewards are plentiful: awe-inspiring and varied scenery, challenge and adventure, and an unrivalled opportunity to immerse yourself in the island's rugged mountain landscapes. If you're new to the GR20, here we answer all the key questions to help you understand what it's all about.
Trekking the GR20 Corsica
The High Level Route: Guidebook and map booklet
£17.95
Guidebook to Corsica's GR20, one of Europe's classic treks. The most challenging of the GR long-distance routes, the trail crosses remote mountain terrain and involves plenty of hands-on scrambling. Includes information about accommodation, refreshments and facilities and a separate booklet showing the entire route on IGN 1:25,000 maps.
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What is the GR20?
The GR20 is a long-distance hiking trail that traverses the island of Corsica from north to south. It is part of France’s extensive network of Grande Randonnée (GR) trails and is known for its rugged terrain, high-altitude sections, and stunning landscapes.
Where is the GR20?
The trail runs through Corsica, a French island in the Mediterranean. It starts in the northern village of Calenzana and ends in the southern town of Conca, covering some of the island's most remote and dramatic parts.
How long is the GR20?
The GR20 spans approximately 190km and typically takes around 16 days to complete, depending on pace, weather, and fitness level.
How difficult is the GR20?
This is not a hike for beginners! The GR20 is considered one of the most challenging trails in Europe due to its steep ascents, rocky paths, and unpredictable weather. Hikers must be prepared for long days, tough climbs, and technical sections that require scrambling. It's suitable for experienced walkers who are willing to carry backpacking kit.
What is the best time to hike the GR20?
The best time to hike the GR20 is from June to mid-October. Outside these months, snow and ice can make the trail dangerous, and many refuges close for the season.
What is the terrain like?
Expect a mix of rocky ridges, steep descents, forested valleys, and exposed alpine sections. Some parts of the trail require scrambling over boulders, and there are chains and ladders to assist on certain sections.
What accommodation is available on the GR20?
Accommodation is available in mountain refuges, which are basic but provide food and shelter. Wild camping is not permitted, but designated camping areas near the refuges allow you to pitch a tent if you prefer more privacy.
Are there any risks or challenges?
Yes. The GR20 is known for its unpredictable weather, with sudden storms, strong winds, and hot sun all possible in one day. Water sources can be scarce in some sections, and injuries from falls or exhaustion are not uncommon. Planning ahead and understanding the risks is crucial.
Is it possible to do just part of the GR20?
Yes – many hikers complete either the trail's northern or southern section. The northern half (Calenzana to Vizzavona) is the most challenging, while the southern half (Vizzavona to Conca) is slightly easier but still demanding.
How do you get to the start and finish?
The nearest airport to the northern start point (Calenzana) is Bastia or Calvi, while Figari is closest to the southern end (Conca). Public transport, including buses and trains, connects major towns to the trailheads, though some routes may require a taxi.
Trekking the GR20 Corsica
The High Level Route: Guidebook and map booklet
£17.95
Guidebook to Corsica's GR20, one of Europe's classic treks. The most challenging of the GR long-distance routes, the trail crosses remote mountain terrain and involves plenty of hands-on scrambling. Includes information about accommodation, refreshments and facilities and a separate booklet showing the entire route on IGN 1:25,000 maps.
More information
