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InfoOff season: GR20 refuges have been unstaffed since October 4 (no meals or supplies) and snow is possible up high. Wardens return around mid-May. Details

13 days Very challenging

The GR20 in 13 days

Thirteen days for very well-trained hikers, doubling up several stages in the north and the south.

184 km 114.3 mi11,260 m 36,942 ft ascent14.2 km / daynorth → southStart: Calenzana

This fast pace combines Ortu di u Piobbu – Haut-Asco, Petra Piana – Vizzavona and Usciolu – Asinau. It means days of 8 to 10 hours on technical terrain, with as light a pack as possible.

It leaves little margin in case of thunderstorms or massif closures due to fire risk: keep one or two spare days in your trip.

Day-by-day plan

Day	Leg	Distance	Ascent	Descent	Walking time	Overnight
	Calenzana → Ortu di u Piobbu	11.4 km	1,420 m	170 m	5h30 – 6h30	Refuge d'Ortu di u Piobbu
	Ortu di u Piobbu → Haut-Asco	12.2 km	1,400 m	1,500 m	7h45 – 9h15	Haut-Asco
	Haut-Asco → Tighjettu	8.4 km	1,150 m	920 m	5h45 – 6h45	Tighjettu and Bergeries de Ballone
	Tighjettu → Castel di Vergio	14.9 km	720 m	980 m	5h15 – 6h15	Castel di Vergio
	Castel di Vergio → Manganu	16.5 km	640 m	460 m	4h45 – 5h45	Refuge de Manganu
	Manganu → Petra Piana	8.4 km	810 m	540 m	4h – 4h45	Refuge de Petra Piana
	Petra Piana → Vizzavona	19.5 km	1,110 m	2,000 m	8h30 – 10h15	Vizzavona
	Vizzavona → E Capannelle	14.5 km	950 m	310 m	4h45 – 5h30	Capannelle
	E Capannelle → Prati	17.7 km	900 m	690 m	5h30 – 6h30	Refuge de Prati
	Prati → Usciolu	10.9 km	620 m	670 m	4h – 4h45	Refuge d'Usciolu
	Usciolu → Asinau	20.7 km	850 m	1,040 m	6h30 – 7h45	Refuge d'Asinau
	Asinau → I Paliri	15.3 km	420 m	930 m	4h45 – 5h30	Refuge d'I Paliri
	I Paliri → Conca	13.2 km	270 m	1,040 m	4h – 4h45	Conca
Total		184 km	11,260 m	11,250 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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Tips for this itinerary

Test your fitness on several consecutive days of 1,000 m of ascent before you go.
Plan buffer days: closures due to fire risk are common 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

11.6 km1,450 m6h30

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

8.3 km1,150 m6h45

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

6.4 km650 m3h45

6 Refuge de Ciottulu di i Mori Refuge de Manganu

1,250 m1,500 m1,750 m2,000 m2,250 m0 km10 km20 km

25.1 km700 m8h30

7 Refuge de Manganu Refuge de Petra Piana

1,500 m1,750 m2,000 m2,250 m0 km2 km4 km6 km8 km

8.3 km800 m4h45

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

9.9 km470 m4h30

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

9.7 km630 m5h30

10 Vizzavona E Capannelle

750 m1,000 m1,250 m1,500 m1,750 m0 km5 km10 km

14.4 km960 m5h30

11 E Capannelle Refuge de Prati

1,000 m1,250 m1,500 m1,750 m2,000 m0 km5 km10 km15 km

17.7 km880 m6h30

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

10.9 km610 m4h45

13 Refuge d'Usciolu Plateau du Cuscionu (Matalza)

1,250 m1,500 m1,750 m2,000 m0 km5 km10 km

10.9 km230 m3h45

14 Plateau du Cuscionu (Matalza) Refuge d'Asinau

1,250 m1,500 m1,750 m2,000 m2,250 m0 km2 km4 km6 km8 km

9.9 km590 m4h15

15 Refuge d'Asinau Refuge d'I Paliri

750 m1,000 m1,250 m1,500 m1,750 m0 km5 km10 km15 km

15.2 km400 m5h15

16 Refuge d'I Paliri Conca

0 m250 m500 m750 m1,000 m1,250 m0 km5 km10 km

13.2 km250 m4h45

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