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GR20 Trail Running Adventure in Corsica

GR20 Trail Running Adventure in Corsica | undefined

A certified local guide will take you on a fantastic 8-day GR20 trail running adventure in Corsica. An intense experience you won't forget!

Group

8 Days

Jun - Oct

High

Intermediate


Highlights

  • Tackle one of the most famous trails in the world.
  • Enjoy a 8-day trail running challenge in nature.
  • Join an experienced certified guide that will help you achieve your goal.

Description

Join us on an unforgettable GR20 trail running adventure in Corsica!

The GR20 is one of the top trails in the world. It spans 180 km (112 mi) and crosses the stunning island of Corsica from north to south, as well as attracting many adventurous spirits that explore it either hiking or running.

Created in 1972, the GR20 was designed as part of France’s national network of “Grande Randonnée” hiking trails. Since then, it has gained a near-mythical status among outdoor enthusiasts, drawing adventurers from around the world. Whether hiked or run, the GR20 challenges both body and mind—and rewards those who take it on with unforgettable experiences in the heart of Corsica’s wild, rugged landscape.

Crossing the GR20 is no easy feat and requires proper training and guidance. On this 8-day challenge, we will have the chance to enjoy trail running on this world-famous route, which many consider Europe’s most difficult. You will receive a personal assessment, professional guiding during the tour, luggage transport, and more. You can find a detailed itinerary below.

Keep in mind that tackling the GR20 requires a very good fitness level. The terrain is rough and it is an up and down trail through the mountains. Therefore, you should not underestimate it and should prepare for the adventure adequately. Of course, we will be there every step of the way to help and guide you.

Even in summer, weather on the GR20 is unpredictable. Microclimates, lingering snow in the north (into July), intense heat, and sudden thunderstorms all add to the challenge. Versatile clothing and careful preparation are essential. Weather also affects trail safety and difficulty—wet rocks, low visibility, and heat exhaustion can quickly become serious risks.

While the trail can get crowded during peak season, this varies depending on the section and year. Still, early booking is advised. Ready to take on Europe’s ultimate trail running challenge? Get in touch now and start planning your GR20 adventure!

So, are you ready for an amazing GR20 trail running adventure? Then contact us now and we’ll begin organizing the details.

Price includes

  • Accommodation included
  • Guiding fee
  • Breakfast
  • Lunch
  • Dinner
  • Transport during the trip
  • Luggage transfer

Price details

  • Included:
  • Pickup charge from the meeting point
  • Transfers from Calvi to Bonifatu and from Bavella to Ajaccio
  • Full board from dinner on day 1 to lunch on day 8
  • Guiding by a licensed mountain guide
  • Luggage transfer between the accommodations
  • Not included:
  • Transfers that are not included in the program
  • Personal expenses, drinks
  • Personal snacks
  • Cancellation and repatriation insurance
  • All that is not written in « this price includes

Meeting point


Itinerary

Day 1: Calvi – Bonifatu

Welcome in Calvi in the afternoon and transfer to Bonifatu. You meet your guide and the rest of the group. First evening together and briefing about your week. Night in Bonifatu.

Day 2: Bonifatu – Ascu

A serious warm-up. From the forest of Bonifatu, we walk up the small valley of Spasimata by a long path spattered with granit slabs. After hiking by the Lake of the Muvrella we pass the Bocca di Stagnu and go down to the high valley of Ascu.

Night at the lodge of Ascu Stagnu.

Duration: 5 hours / Up: +1430m / Down: -600m / 10, 7 km

Day 3: Ascu - Vergio

A long stage in the high mountains. At the heart of the Monte Cintu massif, we pass the “Great Barrier” via the alternative path to the Cirque de la Solitude. The landscapes of the high summits offer a stunning panoramic view from the Pointe Des Éboulis. Terrain is less rough at the end of the stage, approaching the pass of Vergio.

Night at the lodge of Castel di Vergio.

Duration: 9h30 hours / Up: +1980m / Down: -1910m / 24,6 km

Day 4: Vergio – Grotelle / Petra Piana

A varied but beautiful stage. This stage is much easier and brings us on the shore of the Ninu Lake and to the plateau of Camputile. We reach the Capitellu breach before walking down to the Grotelle shepherds’ huts via the lakes.

Night under a tent at the shepherds’ huts of Grotelle or the refuge of Petra Piana.

Duration: 9 hours / Up: +1300m / Down: -1320m / 23.5 km

Day 5: Grotelle / Petra Piana - Vizzavona

A challenging day. We join the GR20 in Bocca Muzella by the wild path of the Cirque des Cascades. We walk by the refuge of Petra Piana and reach the refuge of Onda by a spectacular crest path, where we will eat the bruccio canelloni of the keeper. We have to return to the Muratellu breach before starting our descent to the pass of Vizzavona.

Night at the lodge of Vizzavona.

Duration: 9 hours 30min/ Up: +1950m / Down: -2190m / 22,5 km

Day 6: Vizzavona – Col de Verde

A « resting » stage. This stage is on an easier terrain on the side of the mountain. In the shadows of Larici pines and beech trees, we walk at the whim of shepherds’ huts. You have a panoramic view over the east coast and the close islands.

Night at the lodge of the pass of Verde.

Duration: 8 hours / Up: +1200m / Down: -1010m / 26 km

Day 7: Col de Verde – Bassetta

An ethereal stage. After a steep ascent to the Bocca di l’Oru, we walk on the long crest to the Cuscionu plateau. The terrain is varied; following the path of statues, a panoramic view await you. A break at the refuge of Usciolu allows you to rest a little after this demanding stage.

Night at the lodge of Bassetta.

Duration: 8 hours 30min / Up: +1710m / Down: -1720m / 25.5 km

Day 8: Bassetta – Bavella / Ajaccio

Last but not least. After crossing the lawns of Cuscionu and ascending the Incudine, you can start to see the Aiguilles of Bavella. Walking through these stunning landscapes is one of the highlight of the GR20. After one last descent offering an amazing view on the two shores of Corsica, we join the pass of Bavella which marks the end of our trip through the heart of the mountains.

Duration: 8 hours 30min / Up: +1440m / Down: -1550m / 19.5 km

 

Details

Accommodation

Basic dorms managed by the park. Offer meals, water, and a place to sleep. Booking essential in high season.

Gîtes (Guesthouses): Found in villages like Vizzavona. More comfortable, with private/shared rooms, hot showers, and meals. Bivouac/Camping: Allowed only near refuges at designated spots. Bring your own tent or rent one on-site. No wild camping elsewhere. Hotels: Available in towns at the start, middle, or end of the trail (e.g., Calenzana, Conca). Ideal for pre/post-trek comfort. Bergeries (Shepherd Huts): Private rustic lodges with dorms and home-cooked meals. Limited availability but full of local charm.

More info

Booking in advance is essential on the GR20, especially during peak season (June to September). Refuges, gîtes, and bergeries fill up quickly, and securing your spot early ensures a place to rest and eat each night. Without reservations, you risk having to camp in less comfortable conditions or miss out on accommodations altogether. Plan ahead to guarantee a smooth, enjoyable trek.


FAQs

Which airport is best to fly into to start the trip? And which airport is best to depart from at the end of the trip?

The best option is to fly to Calvi and take a flight back from Ajaccio.

Do I need to carry all my food?

No. Most stages have refuges or shepherd huts where you can buy hot meals, snacks, and basic groceries. However, supplies are limited and pricey, so bring some essentials or special diet items.

Are meals available at the refuges?

Yes, most offer half-board (dinner + breakfast) and sometimes packed lunches. Meals are simple but filling. Reserve in advance during peak season.

Where can I resupply?

Most stages end at refuges with limited resupply options. Larger stops like Vizzavona, Asco, and Bavella have more variety. Still, don’t rely on finding everything on the trail.

What snacks should I bring?

High-calorie, lightweight options like nuts, dried fruit, energy bars, cheese, or sausage are ideal. Some are sold on the trail, but prices are higher.

Is the GR20 really that hard?

Yes. It’s one of Europe’s toughest trails, with steep climbs, exposed sections, and rough terrain. Only attempt it if you have strong fitness and mountain experience. Don’t underestimate it—many people drop out.

What kind of weather should I expect?

Expect everything: heat, cold, storms, fog, and even snow in early summer. Weather changes fast, so bring layers, waterproofs, and always check forecasts before setting out.

Is the trail easy to follow?

Mostly, yes—but fog or damage can obscure markings. Carry a map, GPS or offline trail app, and check for route updates daily. Some detours may apply.

How do I stay healthy on the trail?

Stay hydrated and protect yourself from heat, sun, and fatigue. Carry purification tablets or a filter. Take breaks, eat regularly, and rest if you're feeling unwell.

What are some recommended accommodations near our adventure location?

We understand that finding the perfect place to stay is an essential part of your adventure experience. To help you with this, we’ve curated a list of three highly recommended hotels that offer comfort, convenience, and a touch of local charm. These accommodations are well-suited for adventurers looking to relax and rejuvenate after an exciting day of exploration
Hotel Corsica
Calvi
La Villa

About the guide

Guide profile image

Hiking

5.0

(12)

Mountain Guide

We are specialists in hiking holidays in Corsica...and it is not by chance. We are a small team who is passionate about the Corsican landscape and who has been hiking in its mountains for years.

On our tours, you will discover the best spots in Corsica and uncover all its best-kept secrets. You'll be able to avoid the crowds and explore the island's wild and untamed nature. Come join us!

Languages

French | English

Certificates

UIMLA | IVBV | UIAGM | IFMGA


What people are saying about Hiking

Jacqueline

Fantastic! Very enjoyable & a very memorable experience:)

Le GR20 du Sud a été superbe et je suis revenu avec beaucoup de souvenirs grandioses. Je suis très heureux de mon séjour, de cette première approche du GR20 et de la découverte de la Corse « qui se mérite ». Je remercie Couleur Corse pour leur organisation et leur efficacité qui nous permettent de marcher sur un chemin mythique le GR20.

Yvan ( notre accompagnateur ) nous a mené jusqu'au bout, encore merci à lui pour son professionnalisme un groupe mixte bien soudé malgré un électron libre Bravo à tous et surtout à toutes ( super nanas , des guerrières ) je reviendrai avec mes enfants dans 3 ans encore merci à vous pour cette magnifique semaine

Excellente organisation, super choix des lieux de randonnée, et hébergements topissime.

Merci Couleur Corse pour ce magnifique séjour sur le GR Sud tout était parfait, très bien organisé et un grand merci à notre guide Serge


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