I've done a number of long distance walking holidays now. Weeks straight of walking every day. Pilgrims walk ~800km in ~6 weeks on the Camino de Santiago in Spain throughout the year. I've done shorter routes both in Spain and elsewhere. It's really a great way to switch off. Your whole life becomes the Way. How far do you have to walk? Where are you going to eat? Do you need to carry food? What's the weather looking like? Going back to being stationary afterwards is quite jarring actually.