There can be something akin to meditation in walking, or "taking a walk". An approach I've taken in the past is attempt to hear all the sounds. Not to listen

There can be something akin to meditation in walking, or "taking a walk". An approach I've taken in the past is attempt to hear all the sounds. Not to listen to, just hear. Wherever you are, there are likely enough sounds for this. If you catch yourself focusing on one sound, gently let it go back to the level of the rest. If you find yourself not hearing sounds, gently let yourself hear them again. I believe this is quite similar to bringing your mind back to the breath in sitting meditation in Vipassana and similar practices, though others may correct me. The difference here is that it's perhaps somehow more obvious when your mind has strayed from its object. In fact, there are forms of walking meditation in Vipassana and other practices. These focus -- again, I believe -- much more on the walking: the walking and its sensations are the object. Generally you would walk up and down a short stretch; this avoid the worry of a route, or how to return to the starting point.