GR20 Northern Half (from South to North)

This section starts at Refuge de Manganu (1601 m) and ends at Refuge de Ciottulu di i Mori (1991 m). Today's highest point is Col de Reta, located at 1883 m. You climb just over 1000 metres today and descend 650 metres. The trek takes about 8 hours either way.

Highlights:
- Guagnose
- Soccia (750 m)
- Orto (700 m)
- Lac de Creno (1310 m)
- Monte Ritondu (2622 m)
- Lac de Nino (1760 m)
- Col de Vergio (1477 m)
- Albertacce (840 m)
- Calasima (1100 m)

This section of the GR20 starts in Refuge de Ciottulu di i Mori (1991 m) and ends in the lower Refuge de Tighjettu (1683 m). With less than 100 metres of climbing today, the ascent is minimal but windy. At 600 metres, there is significantly more downhill to tackle. At 4 hours either way, this is also a much shorter day.

Highlights:
- Col de Vergio (1477 m)
- Albertacce (840 m)
- Calasima (1100 m)
- Col des Maures (2155 m)
- Paglia Orba (2525 m)

This section starts at Refuge de Tighjettu (1683 m) and ends at Haut Asco (1422 m). The highest point is the Col de Minuta, which is at 2183 m. Today's total climb is 740 m, and there is a descent of a total of 999 m. The route is 8 km long, and the average walking time is about 6 hours in both directions.

Highlights:
- Calasima (1100 m)
- Lozzi (1029 m)
- Refuge de l'Erco (1667 m)
- Lac Du Cinto (2289 m)
- Punta Minuta (2556 m)
- Monte Cinto (2706 m)

This stage starts at Refuge d'Asco at 1422 m and ends at Refuge de Carrozzu (1270 m). The highest point of the day is Col de Stagni, at 2010 m. The total climb is 638 m and the descent 790 m. The route is 6 km long and the average walking time is about 6 hours in both directions.

Highlights:
- Monte Cimo (2706 m)

The penultimate stage starts at Refuge de Carrozzu (1270 m) and ends at Refuge d'Ortu di u Piobbu (1570 m). The highest point is the ridge at 2020 m above Col d'Avaratoli. 917 metres of ascent and 667 metres of descent are on the programme. This stage is 8 km long, with an average walking time of 5 hours and 7 hours in the opposite direction.

Highlights:
- Cirque de Bonifatu

The last stage of the GR20! From Refuge d'Ortu di u Piobbu at 1570 m, it's one long descent to Calenzana, the endpoint and, for most people, the starting point of the GR20. 10 kilometers and about 5 hours of hiking, and then it's over.

Highlights:
- Cirque de Bonifatu
- Capu Jovu (Ghiovu, 1629 m)
- Capu di Pratu (828 m)
- Capu a e Vacche (624 m)