I did this hike yesterday, and whilst I wouldn’t deter anyone from attempting it, I would recommend you be reasonably fit. I am, and I have done hikes like this before, and I am 60 years old. So sure, if you are younger, go for it!! The trail was basically a goat track for a long time, climbing over boulders, and very, very steep ascents, and looking out for those two red dots, that become your lifeline! I thoroughly enjoyed it, it wasn’t particularly hot,but you’ll need water. It took me one and a half hours, and the sight of the little bay that is San Fruttuoso through the trees is magical.