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GR20 (Corsica)

Calenzana to Conca, Corsica, France · 112 miles · 12–16 days

StrenuousNo permit
112Miles
12–16Days
38,000 ftGain
ThruType

Permits

System
Parc Naturel Régional de Corse refuge bookingNo permit but refuge reservations essential July–August. Book via parcnaturelcorse.com or individual refuge websites. Wild camping prohibited within the park. Carry a shelter for flexibility.Apply or read more
Cost
€18–25/night refuge + €25–40 half-board option
Bear storage
Not applicable

Season

Best
Late June – mid September
JFMAMJJASOND
PeakShoulderClosed

On trail

Water
Mountain streams throughout. Filter all sources.
Resupply
Vizzavona (mile ~52) is the only mid-route town. Train stops here — easy bail option if needed.
Notes
Regarded as the hardest long-distance trail in Europe. Relentlessly steep and technical — more scrambling than hiking in the northern half. 30% of hikers abandon before completion. Take the difficulty seriously.
Elevation
350 ftHigh 2,706 ft
Resupply towns
Calenzana
Haut Asco
Vizzavona (mid-route — train connection)
Zicavo
Conca

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