In England public footpaths designate a legally protected right of way across private lands. They provide a great way to travel “off the beaten path” although they are sometimes so far off that it is difficult for the inexperienced walker to make out quite where the path lies.
However, maps abound. And once one becomes familiar with the signage, exploring the countryside via the footpaths is a wonderful way to see it.
I’m wandering somewhere here: Pavement Lane, FP16 and FP14
Mobberley Footpaths Online