From Carpineto, parking in area on hairpin on Rerum Novarum, about half a kilometre from Il Pratozzo. On the north side of hill, so out of sun. Climbing gradually westwards before going into a series of switchbacks and arriving at the pass (la fota?). From here you see three prominences, the last of which is Perentile. About 45 mins walk to Perentile and back to the saddle. The climb to it took about 1 hour. It is along a wide track, like a motorway for hikers.
A little dull as little can be seen for most of the climb. Lots of chestnut trees growing here.