GR20

The trail is often done southbound, starting in Calenzana and ending after approx. 193 km in Conca, but it can be hiked in both directions. Be aware that the northern part is a high alpine route, with a lot of climbing and deep, steep valleys next to the trail. You should be able to handle heights for this. It also might take you 2-3 days to make it to the next exit point, if you decide that you want to bail out. At the half-point in Vizzavona, the trail changes rapidly and evolves into a more relaxed routed environment. While it still has steep climbs and descents, it is not as extreme as the northern part.

If you like to play it safe and check your limits before trying your luck, I would recommend starting in Conca, going northbound, and deciding in Vizzavona if you want to take the train out or continue further North. But be aware that the northern part is twice or even thrice as hard and sketchy as the southern part.

While hiking, you’ll mostly walk through National Park Areas. Even though the Island is cultivated, you will feel isolated most of the time, even with many other hikers around you. The trail is marked in the colors of red and white and you should have a very secure step because you often cross slippery stones or walk on loose gravel. The so-called trail is often just a pass. We highly advise you to camp at one of the Refuges or Bergeries (farms), as wild camping is forbidden and will be fined heavily!

If you walk Sobo, you will start your hike in the Town of Calenzana. Expect hot temperatures on your climb up into the mountains. As you continue to climb, you will recognize that the dry and hot environment is becoming more green and cooler. Your first days are going to be more climbing than hiking. Enjoy breathtaking views in this high alpine setting. While seeing harsh peaks and valleys on your way south, you will still see the Mediterranean Sea for almost all of your trip. You will cross lush pine forests, fresh springs, and even bigger rivers.

A lot of leg strength and trained ankles are needed, the climb and descent is usually straight up the mountain, with few switchbacks.

Some trails are secured with iron chains to give you better protection on your climbs, your hands will have as much work as your feet here! You usually enter and exit sections via so-called Brèches and Boccas, small gaps in crests and ridges.

Make sure to visit some of the highest mountains on Corsica, while hiking, e.g. the Monte Cinto (leave your backpack before doing this side trail, it is much sketchier than the GR20).

You will share your experience with many others. Corsica is known for its stunning beauty, and the GR20 is also well known. So expect many others beside you and respect them. Nonetheless, we experienced only friendly hikers and even had a little tramily.

Already on your first day, you will climb up a 1000 m. From this day on, you will be at heights between 1400 and 2000 m above sea level. The lowest point is at the halfway point in Vizzavona with 920 m.

The best time of the year to hike the GR20 is undoubtedly in summer and September. As you’re hiking in the mountains, be aware that there might be snowfields in early summer and there might be early snowfalls in late summer and early autumn. Generally, the hiking season on Corsica is limited to the summer months when the weather is milder and the snow has melted, making the trails accessible. Be aware that during August, thunderstorms appear daily, as hot water evaporates from the ocean and hits the colder air within the mountains. Often you can already see the clouds forming in the morning before they start climbing up into the mountains.

Keep in mind that the weather in the high mountains can change rapidly, and it’s essential to be prepared for various conditions, including sudden rain or snow showers. Always check trail conditions, and local weather forecasts before embarking on a high-alpine hike. Because cell service is limited to high peaks, don’t hesitate to ask local farmers and shepherds, as they often know the latest forecasts and also have a feeling for the weather. Additionally, consider your hiking experience and skill level, as almost the whole trail is challenging and requires proper fitness, good foot stability, and no fear of heights.

This trail is known as one of the hardest in Europe for a reason! Prepare by thoroughly researching the trail and understanding its difficulty level, terrain, and potential hazards. Consider your mental and physical abilities and train to be sure you’re ready. Download detailed maps and guidebooks (links below) for navigation and plan your route carefully, considering factors such as daily distances, elevation gains, and camping options. Know that it’s okay to end at any exit point.

Check the weather forecast before setting out and be prepared for rapidly changing conditions, including high winds, rain, and snow at higher elevations. Dress appropriately in layers and wear sturdy hiking boots with good ankle support to navigate rugged and rocky terrain safely.

Pack essential items such as plenty of water, high-energy snacks, a first aid kit, and a fully charged mobile phone or satellite communication device for emergencies. Consider bringing a GPS device or compass for navigation, especially in areas with limited signage or visibility.

Traveling solo on the GR20 is not recommended due to its remote and challenging nature. Consider hiking with a companion, especially if you’re less experienced in mountainous terrain.

While hiking, stay on marked trails and be cautious of steep ascents, exposed ridges, and unstable ground. Take regular breaks to rest and rehydrate, and listen to your body’s signals to avoid injury or fatigue.

Respect local regulations and wildlife along the trail, and Leave No Trace of your visit to preserve the natural beauty of the Corsican wilderness.