Only three nights, but well placed: Haut-Asco, Castel di Vergio and Petra Piana. The first day, from Calenzana to Haut-Asco via Ortu di u Piobbu and Carrozzu, adds up to nearly 2,800 m of ascent; the second crosses the Pointe des Éboulis, Tighjettu and Ciottulu di i Mori.
This itinerary is for experienced trail runners only, with a very light pack and a good knowledge of the mountains in bad weather.
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 Via the Onda hut. | 19.5 km | 1,110 m | 2,000 m | 8h30 – 10h15 | Vizzavona | |
| Total | 91 km | 7,260 m | 6,560 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
one colour per dayD1overnight stoprest of the GR20variants
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Customise this itineraryTips for this itinerary
- Leave Calenzana before daybreak (starting after 11 am is prohibited).
- Identify your fallback points in case of thunderstorms: Haut-Asco and Castel di Vergio can be reached by road.
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