Question on feeling sore


So I don’t have a car while live my here lol n switzerland. We take trains and buses to get places if need be or walk. Anyways, do any of you feel really sore after walking a lot say 1 mile. (No hill)? I made sure to sit when I got back. But been sitting and having feel up and resting and then when I have to go to the bathroom or do something in the kitchen, it’s sore to walk.

Any suggestions on how to feel better?