An Teallach There's no way round it. The paths we walk in the hills and mountains are hammered by our boots and shoes. The more popular the path the greater and faster the wear and tear. Weather extremes, which are increasing, have an adverse effect too. Too many of our upland paths are becoming badly eroded, damaging to the environment, eyesores, and often unpleasant to walk on (the last being a reason so many spread out as the most badly damaged sections are avoided for the edges).
The solution is maintenance of course, regular maintenance. If neglected too long a complete reconstruction may be needed.
Path work is slow and laborious. It takes time and many hands. That means it takes money, a great deal of money. One metre of path costs on average £90 to repair and at least 410km of paths are in need of serious repair.