Subregion

GR20

Corsica's legendary long-distance trek through rugged mountain wilderness

The GR20 doesn't mess around. This 180-kilometer spine-crusher cuts straight through Corsica's granite heart, linking the Mediterranean island's highest peaks in what many consider Europe's toughest long-distance trek. You'll scramble over knife-edge ridges, navigate boulder fields that look like a giant's game of Jenga, and sleep in mountain refuges where the snoring echoes off stone walls. It's not a walk—it's a 15-day wrestling match with raw mountain wilderness. But here's the payoff: views that'll make your Instagram followers weep with envy, and the kind of accomplishment that changes how you see yourself. Just don't expect it to be easy.

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The GR20 runs north to south from Calenzana to Conca, split into two distinct personalities. The northern section (Calenzana to Vizzavona) is the beast—think technical scrambles, chains bolted to cliff faces, and terrain that'll have you questioning your life choices. Stage 4 from Ascu Stagnu to Tighjettu is particularly notorious, with the Cirque de la Solitude living up to its ominous name. The southern half mellows out slightly. You'll still climb plenty, but the granite gives way to more forgiving terrain and actual dirt paths instead of endless rock hopping. Most trekkers tackle it in 15 stages, though speed demons compress it into 10-12 days. Each stage averages 6-8 hours of hiking, with elevation gains that'll make your calves scream. The refuges sit roughly a day's walk apart, though weather can turn that comfortable schedule into a survival situation fast.

Money-Saving Tips

  • 1.Book refuge beds and meals in advance to avoid premium walk-up rates that can double your accommodation costs
  • 2.Bring your own food for lunches and snacks—refuge prices for basic supplies can hit €8 for a simple sandwich
  • 3.Consider wild camping where permitted to cut accommodation costs, but invest in proper gear for rocky terrain
  • 4.Take the train to Corsica instead of flying to save €100-200, then use local buses rather than taxis between trailheads
  • 5.Split group taxi costs for transfers—a €60 ride becomes €15 when shared among four hikers
  • 6.Buy gear on the mainland—Corsican outdoor shops charge island premiums for everything from boots to backpacks

Travel Tips

  • •Download offline maps before starting—cell service disappears completely in the mountains and GPS can be lifesaving
  • •Start each day before 6 AM to avoid afternoon thunderstorms and the worst heat on exposed ridges
  • •Carry extra water capacity—some sources dry up in late summer, forcing longer carries between reliable supplies
  • •Pack blister treatment and know how to use it—the rocky terrain destroys feet faster than any other European trail
  • •Learn basic French phrases—refuge staff and fellow hikers rarely speak English, especially in remote locations
  • •Bring cash in small bills—refuges operate on cash-only basis and rarely have change for large denominations
  • •Test all gear thoroughly before departing—equipment failures in Corsican mountains can become dangerous situations quickly

Frequently Asked Questions

The GR20 is widely considered Europe's toughest long-distance trek. Unlike trails with gradual elevation gain, you're constantly scrambling over granite boulders and navigating technical terrain that requires hands-on climbing. The Tour du Mont Blanc feels like a gentle stroll in comparison.

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