Clark: When we were thinking about the sustainability of the trails, we considered several factors. The first was obviously the trail itself and if there were any features that made it more sustainable than others including: switchbacks, turnpiking or any recent trail work like hardening or improving drainage. Then we thought about how popular a trail already was and shied away from some trails such as High Peak summits that have eroded trails seeing higher volumes of people. We also considered whether or not a trail could handle some increase in use if they became more popular.