description GR20, Corsica Overview
The GR20 is widely considered the toughest long-distance trail in Europe. Running the length of Corsica, it traverses jagged granite peaks, deep gorges, and high-altitude plateaus. It is not for the faint of heart; the terrain is technical, requiring scrambling and significant physical endurance. However, the reward is a wild, Mediterranean mountain experience that is completely unique.
The trail is serviced by 'refuges' that provide basic shelter and food. It is the ultimate test for experienced backpackers looking to push their limits in a stunning, rugged environment.
info GR20, Corsica Specifications
| Direction | North to South (Calenzana to Conca) |
| Best Season | Late June to mid-September |
| Lowest Point | Sea level at start/end points |
| Total Ascent | Approximately 10,000m |
| Trail Length | 180 km (112 miles) |
| Trail Marking | Yellow and white GR markers |
| Difficulty Rating | Expert/Expert++ (Alpine Association scale) |
| Maximum Elevation | 2,706m at Monte Cinto region |
| Number Of Sections | 15-16 stages |
| Typical Completion Time | 15-16 days |
balance GR20, Corsica Pros & Cons
- Spectacular alpine scenery with dramatic granite peaks, deep gorges, and pristine mountain lakes
- One of Europe's most challenging and rewarding thru-hiking experiences with high sense of achievement
- Well-marked trail with refuges providing basic shelter and meals along the route
- Authentic wilderness experience largely free from crowds found on other famous trails
- Diverse landscapes crossing from Mediterranean coastline to high-altitude plateaus in a single route
- Technical terrain offers genuine scrambling and mountaineering opportunities for experienced hikers
- Extremely demanding terrain requiring scrambling, high fitness, and proper hiking experience
- Limited infrastructure - refuges have limited capacity and book months in advance during peak season
- Rapidly changing weather at high altitude can make sections dangerous, especially when wet
- Some legs have significant elevation gain/loss requiring 6-8 hours of strenuous hiking
- Not suitable for beginners or those uncomfortable with exposure and steep, rocky paths
help GR20, Corsica FAQ
How long does it take to complete the GR20 hiking trail?
The GR20 typically takes 15-16 days to complete at a comfortable pace. Experienced hikers in excellent shape can finish in 10-12 days, while those preferring shorter daily legs may take 18+ days.
When is the best time to hike the GR20?
Late June through mid-September offers the most reliable conditions. July and August are busiest; June and September have fewer crowds but some refuges may have limited services.
Do I need technical mountaineering skills for the GR20?
No formal climbing skills are required, but you should be comfortable scrambling over exposed rocky terrain, have good balance, and be comfortable with heights on several sections.
Can I hike the GR20 without booking refuges in advance?
Booking refuges is strongly recommended, especially in summer. Many fill months ahead. Camping is only permitted at designated areas near some refuges, not freely along the trail.
What level of fitness is needed for the GR20?
You need excellent cardiovascular fitness and strong legs for steep ascents and descents. Regular multi-day hiking experience with a loaded backpack is essential before attempting the GR20.
What is GR20, Corsica?
How good is GR20, Corsica?
How much does GR20, Corsica cost?
What are the best alternatives to GR20, Corsica?
What is GR20, Corsica best for?
Experienced backpackers and hikers with excellent fitness seeking one of Europe's most challenging and rewarding thru-hiking adventures through dramatic Corsican mountain terrain.
How does GR20, Corsica compare to GR11, Spain?
Is GR20, Corsica worth it in 2026?
What are the key specifications of GR20, Corsica?
- Direction: North to South (Calenzana to Conca)
- Best Season: Late June to mid-September
- Lowest Point: Sea level at start/end points
- Total Ascent: Approximately 10,000m
- Trail Length: 180 km (112 miles)
- Trail Marking: Yellow and white GR markers
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