The GR20 between Calenzana and Conca is considered one of Europe's best but also most difficult hikes. The recommended time of year to do this hike safely is usually given as June to mid-October.
Our travel plans would only allow us to be on Corsica in late October / early November.
As Wikipedia and other sources state, the southern part between Vizzavona and Conca is considered to be easier.
My question is:
- What types of difficulties are the reason why doing the hike later than mid-October is not recommended?
- Are they as relevant for the 'easier', lower altitude southern part?
- Would specific equipment and weather report information be more crucial than during summer?
- Is the northern part much more interesting and beautiful, such that you would recommend rather going for only that one or the full hike sometime in summer?