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GR20

France🇫🇷 | hikesGR20Corsican peaks, granite spires, technical terrain | things to do and best time to go

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Backpacking in GR20
🏆 Top pickhike ranked #2
By Johan Kruseman 🇳🇱 | Updated October 15, 2026

Most people online call the GR20 “Europe’s toughest trek,” but the surprise is this: the trail doesn’t crush you in one epic blow, it wears you down day after day with awkward rock, constant scrambling, and lousy sleep. The GR20 cuts diagonally across Corsica, that mountainous island off France’s Mediterranean coast, from Calenzana in the north to Conca in the south. It’s about 180 km of jagged ridgelines, chains, boulder fields, and big elevation swings, with scenery that jumps from lunar granite to pine forest to high, wind-ripped lakes. Getting to the start is actually straightforward: fly or ferry to Bastia or Calvi, then bus to Calenzana, far easier than the drama suggests. Compared to France’s Alpine classics like the Tour du Mont Blanc, the GR20 is shorter, rougher, more primitive, and less polished—less pastry, more goat cheese and bruises—but the sense of earning every view is off the charts.

Discover everything you want to know in the 📖 France Travel Guide.
Best time to go: June - September
Duration: 15 to 16 days
Distance: 180 kilometers
Total ascent: 12,500 meters


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✨ Why go?
Ranked #2 hike in France
Reasons people choose to hike the here

The GR20 in France is a magnet for backpackers craving challenge and reward. This trail slices through the heart of Corsica, offering a scenery-to-effort ratio that’s hard to beat. You’ll sweat it out on rocky ascents, but the payoff? Jaw-dropping vistas that stretch for miles, where the rugged mountains meet the azure sky.

Getting there is a breeze. Public transport access is solid, with buses connecting major towns to trailheads. You can hop off and dive right into the adventure without breaking the bank. The low cost of camping and refuges along the route means you can stretch your budget while soaking up the wild beauty around you.

What’s more, the GR20 allows for flexible distances. Whether you’re a seasoned pro or a first-timer, you can tailor your days to match your energy levels. … read more 👉
The GR20 in France is a magnet for backpackers craving challenge and reward. This trail slices through the heart of Corsica, offering a scenery-to-effort ratio that’s hard to beat. You’ll sweat it out on rocky ascents, but the payoff? Jaw-dropping vistas that stretch for miles, where the rugged mountains meet the azure sky.

Getting there is a breeze. Public transport access is solid, with buses connecting major towns to trailheads. You can hop off and dive right into the adventure without breaking the bank. The low cost of camping and refuges along the route means you can stretch your budget while soaking up the wild beauty around you.

What’s more, the GR20 allows for flexible distances. Whether you’re a seasoned pro or a first-timer, you can tailor your days to match your energy levels. Each segment offers its own unique flavor, from lush forests to stark granite ridges.

As you conquer each section, you’ll find that the journey itself is just as exhilarating as the destination. That first cold beer at the end? It tastes like victory.

💡 HighlightsPlaces and moments you shouldn't skip

  1. Lac de Nino and the Pozzines — A flat, high-altitude meadow dotted with mirror-like peat pools (pozzines) and often grazed by semi-wild Corsican horses; the contrasting green pools against rugged peaks feel unlike typical alpine lakes and make for unforgettable, peaceful mornings.
  2. Lac de Melo and Lac de Capitellu — Two glacial lakes tucked into sheer granite amphitheaters; Capitellu’s sheer cliff drop and deep turquoise water are drama personified, while Melo’s easier access and forested approach make them a perfect, photogenic pair (a short detour from parts of the route is worth it).
  3. Aiguilles de Bavella (Bavella Needles) — Jagged granite spires that slice the skyline in the south; the needles framed by larches at sunrise or sunset are postcard material, and the area has a totally different,
… read more 👉
  1. Lac de Nino and the Pozzines — A flat, high-altitude meadow dotted with mirror-like peat pools (pozzines) and often grazed by semi-wild Corsican horses; the contrasting green pools against rugged peaks feel unlike typical alpine lakes and make for unforgettable, peaceful mornings.
  2. Lac de Melo and Lac de Capitellu — Two glacial lakes tucked into sheer granite amphitheaters; Capitellu’s sheer cliff drop and deep turquoise water are drama personified, while Melo’s easier access and forested approach make them a perfect, photogenic pair (a short detour from parts of the route is worth it).
  3. Aiguilles de Bavella (Bavella Needles) — Jagged granite spires that slice the skyline in the south; the needles framed by larches at sunrise or sunset are postcard material, and the area has a totally different, sculpted-rock vibe than the north’s blocky ridges.
  4. Monte Cinto panoramas and high ridgelines — The GR20’s high passes and exposed crests give sustained, alpine-style views toward Monte Cinto (Corsica’s highest peak) and the island’s interior; long ridge walks and exposed scrambles here feel more like a mini Himalaya than a typical long-distance trail.
  5. Mountain refuges, shepherd huts and Corsican mountain culture — Rustic refuges, shepherd bergeries, and local treats (brocciu cheese, chestnut bread, strong mountain tea) pepper the route; those simple communal dinners, the occasional shepherd and their dogs, and the island’s language and music make the trail culturally distinct from continental thru-hikes.
Spotted a mistake or missing something? Contact us.

Things to do near GR20

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🌤️ When to go?Weather, crowds, and seasonal trade-offs

  • Weather: The GR20’s brutal mountain terrain demands dry trails. Late June through early September offers the most stable weather, with less rain and minimal snow risk. Outside this window, expect sudden storms and slippery rocks.
  • Temperature: Summer highs hover around 20-25°C (68-77°F) during the day, perfect for pushing hard without overheating. Nights can dip to 5-10°C (41-50°F), so pack layers. Spring and fall bring colder temps, often below freezing at altitude.
  • Daylight Hours: Peak summer grants up to 15 hours of daylight, stretching your hiking window. This means earlier starts and later finishes, crucial for tackling the GR20’s long, demanding stages.
  • Crowds: July and August pack the trail with hikers, turning solitude into a shuffle. For fewer people but still decent weather,
… read more 👉
  • Weather: The GR20’s brutal mountain terrain demands dry trails. Late June through early September offers the most stable weather, with less rain and minimal snow risk. Outside this window, expect sudden storms and slippery rocks.
  • Temperature: Summer highs hover around 20-25°C (68-77°F) during the day, perfect for pushing hard without overheating. Nights can dip to 5-10°C (41-50°F), so pack layers. Spring and fall bring colder temps, often below freezing at altitude.
  • Daylight Hours: Peak summer grants up to 15 hours of daylight, stretching your hiking window. This means earlier starts and later finishes, crucial for tackling the GR20’s long, demanding stages.
  • Crowds: July and August pack the trail with hikers, turning solitude into a shuffle. For fewer people but still decent weather, late June or early September is your sweet spot.
  • Seasonal Activities: Summer unlocks mountain refuges and shuttle services. Outside this, many huts close, forcing heavier packs and more self-sufficiency.
  • Price Fluctuations: Peak season drives up refuge prices and transport costs. Booking early can save money, but off-peak months offer better deals if you’re ready for the cold and closures.
Pro-tip: Start late June for a balance of trail conditions, daylight, and crowd control—this window lets you own the mountain without freezing or fighting for space.


source: climatestotravel.comJANJanuary: below average for travelingFEBFebruary: below average for travelingMARMarch: below average for travelingAPRApril: fair for travelingMAYMay: fair for travelingJUNJune: highly recommended for travelingJULJuly: excellent for travelingAUGAugust: excellent for travelingSEPSeptember: highly recommended for travelingOCTOctober: fair for travelingNOVNovember: below average for travelingDECDecember: below average for traveling
France - the GR20

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🛏️ Where to stay?Where staying makes the most sense

If you enjoy meeting fellow travelers, consider choosing hostels with high ratings for atmosphere. On the other hand, if you prefer having your own space, a hotel might be a better option.

🥾 Hike detailsRoute, distance, and difficulty explained

Total Distance: The GR20 stretches approximately 180 kilometers (about 112 miles) across Corsica, making it one of the toughest long-distance trails in Europe.

Estimated Duration: Most hikers take about 15 to 20 days to complete the trail, depending on their pace and how often they stop to soak in the views or rest those weary legs.

Difficulty Level: This trail is not for the faint-hearted. It’s rated as very difficult, with steep ascents and descents, rocky paths, and some sections that require scrambling. Good fitness and hiking experience are essential.

Starting Point: The trail kicks off … read more 👉
Total Distance: The GR20 stretches approximately 180 kilometers (about 112 miles) across Corsica, making it one of the toughest long-distance trails in Europe.

Estimated Duration: Most hikers take about 15 to 20 days to complete the trail, depending on their pace and how often they stop to soak in the views or rest those weary legs.

Difficulty Level: This trail is not for the faint-hearted. It’s rated as very difficult, with steep ascents and descents, rocky paths, and some sections that require scrambling. Good fitness and hiking experience are essential.

Starting Point: The trail kicks off in the village of Calenzana.
How to Get There by Public Transport: You can reach Calenzana by taking a bus from Calvi, which is about 30 minutes away. The bus runs regularly, especially in the summer months, making it pretty accessible.

Major Landmarks Along the Route:
  • Monte Cinto: The highest peak in Corsica, standing at 2,706 meters (8,878 feet), offering breathtaking views.
  • Vallée de la Restonica: A stunning valley with crystal-clear rivers and picturesque landscapes.
  • Bergeries: Traditional shepherd huts dot the landscape, often serving as rest spots or accommodations.
  • Refuges: Various mountain huts along the route provide shelter and meals, making it easier to plan your stops.

Type of Terrain and Scenery: Expect a mix of rocky trails, steep slopes, and some sections with loose gravel. The scenery is a feast for the eyes—think rugged mountains, lush valleys, and dramatic cliffs. You’ll also traverse through dense forests and open alpine meadows.

Typical Vegetation and Wildlife:
  • Vegetation: The trail boasts a variety of flora, including chestnut trees, wildflowers, and aromatic herbs like thyme and rosemary.
  • Wildlife: Keep an eye out for mouflons (wild sheep), eagles soaring overhead, and various lizards basking on the rocks.

Packing your gear wisely and being prepared for changing weather can make a big difference. And remember, while the challenge is real, the rewards in terms of scenery and adventure are absolutely worth it!
⚠️ Hiking info can sometimes be outdated or inaccurate. Before you hit the trail, check the latest conditions with locals. If you do spot anything that's off, I'd love to hear from you, so I can update it for fellow travelers.

🛡️ SafetySafety Tips and Common Scams in GR20

The GR20 in Corsica is a wild beauty, but it demands respect. Weather can shift quickly; sunny skies can morph into sudden storms. Always check forecasts before you head out, and be prepared for anything. The terrain is rugged—steep ascents and descents will test your legs and lungs. Footing can be tricky on rocky paths, so watch your step. Navigation is straightforward, but don’t underestimate the importance of a good map and compass; they’re your best friends when the trail gets less defined.

Wildlife is part of the experience. You might spot a mouflon or a golden eagle, but keep your distance. Feeding animals disrupts their natural behavior and can lead to unwanted encounters.

Pack wisely. Sturdy boots are essential, and trekking poles can save your knees on those descents. Start early … read more 👉
The GR20 in Corsica is a wild beauty, but it demands respect. Weather can shift quickly; sunny skies can morph into sudden storms. Always check forecasts before you head out, and be prepared for anything. The terrain is rugged—steep ascents and descents will test your legs and lungs. Footing can be tricky on rocky paths, so watch your step. Navigation is straightforward, but don’t underestimate the importance of a good map and compass; they’re your best friends when the trail gets less defined.

Wildlife is part of the experience. You might spot a mouflon or a golden eagle, but keep your distance. Feeding animals disrupts their natural behavior and can lead to unwanted encounters.

Pack wisely. Sturdy boots are essential, and trekking poles can save your knees on those descents. Start early to avoid the heat and crowds, and remember to hydrate. The reward? Reaching a summit and soaking in views that stretch for miles, or cracking open that first cold beer at the end of a long day.

FAQTraveler FAQ

The GR20 hike typically takes 15 days to complete, covering about 180 kilometers across Corsica. Most hikers plan for 12 to 16 days depending on pace and rest days.
The GR20 is considered one of the toughest long-distance trails in Europe, with steep ascents, rocky terrain, and technical sections. It requires good fitness and experience in mountain hiking, especially between June and September when most attempt it.
No guide or permit is required to hike the GR20, but booking refuges in advance is essential during peak season. Independent hiking is common, though guided tours are available for those seeking extra support or navigation help.
⚠️ Things can change over time, so always validate details locally before you go.

Other French hikes near GR20

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We 💚 feedbackKey takeaways before you go

The GR20 is a beast, no doubt. But that first glimpse of the jagged peaks at Refuge de l’Onda? Worth every grueling step. You’ll feel like you’ve earned your stripes. Just know: this trail isn’t for the faint-hearted. Expect rocky paths and steep ascents that’ll test your limits. But if you’re up for the challenge, the views and camaraderie will make you forget the burn in your legs. Embrace the grit; it’s part of the adventure.

✈️ When did I visit France?
Being close to The Netherlands, my home base, I visited France many times.

✍️ Help improve this page!
The information on this page is based on my own backpacking experience in France, supplemented with up-to-date research and feedback from other travelers. Travel details can change, so if you notice anything outdated or incomplete, feel free to let me know.



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Johan, backpacker and founder of TakeYourBackpackHi, I’m Johan (Netherlands 🇳🇱), the creator of TakeYourBackpack. Over the past 3 decades, I’ve backpacked through 90+ countries across six continents, gaining extensive experience with independent travel, long-term trips, and overland routes.

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