Some stages are relatively long (Lac Nino is quite difficult, both in terms of length and elevation).
For this hike, we left our car in Corte. We were supposed to pick it up at the end by taking a shuttle from Porto to Corte. Unfortunately, it no longer runs from Porto (although it is listed on the Corsica Bus website?). We took the shuttle from Vergio to Corte, but be careful, it leaves at 3:15 p.m. and only has 8 seats.
Then from Evisa and Porto, you have to hitchhike (it works) to reach the Col de Vergio.