I don't run in my main town, only on main street, if I remember it. Well, I used to before when I just started but once I knew about that it harms the grass and that it's disrespectful to run when you visit other towns, I kinda made it a habit not to
I never run unless I'm on Main Street, on my town's beach, or if I'm doing an island tour where you have to complete tasks quickly. I've experienced grass deterioration in the past and it really makes your town look awful, plus I have hybrid flowers I don't want to trample, so I do my best to avoid it when in my town itself. I might start running around town if I eventually lay patterns down to make paths, but so far I haven't dedicated much time to finding any that I think would look good.
I run on my paths! I'm too impatient to get to one side of my town to another by walking. Especially when it comes to Beetle Farming! My Re-tail is right by the main street entrance, and my dock is, vertically, on the other side. It'd take forever to do 4 trips to just sell beetles if I walked all the time!
Yeah and I walk too.. I really dont use paths and such... makes me stress to much. And animal crossing is a game so no need to stress. But I prefer visitors not to run.