This itinerary sleeps at Haut-Asco, Castel di Vergio and Vizzavona, three stops where you can eat a hot meal and resupply, then crosses the south in three long days. The first, from Calenzana to Haut-Asco, adds up to nearly 2,800 m of ascent; Vizzavona – Prati and Prati – Asinau are each over 30 km.
In under seven days, the GR20 becomes an ultra-trail, with days of 35 to 40 km in the north: it is no longer a hut-to-hut itinerary, and we do not offer one here.
Day-by-day plan
| Day | Leg | Distance | Ascent | Descent | Walking time | Overnight |
|---|---|---|---|---|---|---|
| Calenzana → Haut-Asco Via the Ortu di u Piobbu and Carrozzu huts. | 23.6 km | 2,830 m | 1,660 m | 13h15 – 15h45 | Haut-Asco | |
| Haut-Asco → Castel di Vergio Via the Pointe des Éboulis, Tighjettu and Ciottulu di i Mori. | 23.3 km | 1,870 m | 1,900 m | 11h – 13h | Castel di Vergio | |
| Castel di Vergio → Petra Piana Via Lac de Nino and the Manganu hut. | 24.9 km | 1,450 m | 1,000 m | 8h30 – 10h | Refuge de Petra Piana | |
| Petra Piana → Vizzavona | 19.5 km | 1,110 m | 2,000 m | 8h30 – 10h15 | Vizzavona | |
| Vizzavona → Prati Via E Capannelle. | 32.2 km | 1,850 m | 1,000 m | 10h15 – 12h15 | Refuge de Prati | |
| Prati → Asinau Via Usciolu and the Cuscionu plateau. | 31.6 km | 1,460 m | 1,710 m | 10h30 – 12h15 | Refuge d'Asinau | |
| Asinau → Conca Via the Col de Bavella and the I Paliri hut. | 28.5 km | 690 m | 1,960 m | 8h45 – 10h15 | Conca | |
| Total | 184 km | 11,260 m | 11,230 m | |||
Distances and ascent calculated on the waymarked main route; “≈” marks a day on a variant (estimated values). Walking times according to the DIN 33466 standard, without breaks.
The itinerary on the map
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Customise this itineraryTips for this itinerary
- Before you go, test yourself on several consecutive days of 25 km and 1,500 m of ascent.
- Leave Calenzana at dawn: starting after 11 am is prohibited.
- Carry a 2-litre water reserve on the southern ridges, which are dry in summer.
The stages in detail
1
Calenzana Refuge d'Ortu di u Piobbu
0 m250 m500 m750 m1,000 m1,250 m1,500 m1,750 m0 km5 km10 km
2
Refuge d'Ortu di u Piobbu Refuge de Carrozzu
1,000 m1,250 m1,500 m1,750 m2,000 m2,250 m0 km2 km4 km6 km
3
Refuge de Carrozzu Haut-Asco
1,000 m1,250 m1,500 m1,750 m2,000 m2,250 m0 km1 km2 km3 km4 km5 km
4
Haut-Asco Refuge de Tighjettu
1,250 m1,500 m1,750 m2,000 m2,250 m2,500 m2,750 m0 km2 km4 km6 km8 km
5
Refuge de Tighjettu Refuge de Ciottulu di i Mori
1,250 m1,500 m1,750 m2,000 m2,250 m0 km2 km4 km6 km
6
Refuge de Ciottulu di i Mori Refuge de Manganu
1,250 m1,500 m1,750 m2,000 m2,250 m0 km10 km20 km
7
Refuge de Manganu Refuge de Petra Piana
1,500 m1,750 m2,000 m2,250 m0 km2 km4 km6 km8 km
8
Refuge de Petra Piana Refuge de l'Onda
750 m1,000 m1,250 m1,500 m1,750 m2,000 m0 km2 km4 km6 km8 km
9
Refuge de l'Onda Vizzavona
750 m1,000 m1,250 m1,500 m1,750 m2,000 m2,250 m0 km2 km4 km6 km8 km
10
Vizzavona E Capannelle
750 m1,000 m1,250 m1,500 m1,750 m0 km5 km10 km
11
E Capannelle Refuge de Prati
1,000 m1,250 m1,500 m1,750 m2,000 m0 km5 km10 km15 km
12
Refuge de Prati Refuge d'Usciolu
1,400 m1,500 m1,600 m1,700 m1,800 m1,900 m2,000 m2,100 m0 km5 km10 km
13
Refuge d'Usciolu Plateau du Cuscionu (Matalza)
1,250 m1,500 m1,750 m2,000 m0 km5 km10 km
14
Plateau du Cuscionu (Matalza) Refuge d'Asinau
1,250 m1,500 m1,750 m2,000 m2,250 m0 km2 km4 km6 km8 km
15
Refuge d'Asinau Refuge d'I Paliri
750 m1,000 m1,250 m1,500 m1,750 m0 km5 km10 km15 km
16
Refuge d'I Paliri Conca
0 m250 m500 m750 m1,000 m1,250 m0 km5 km10 km
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