Do you run through the sore spot on the bottom of your foot, and keep on trucking and it eventually disappear, or take it easy and see what happens? I know sometimes it leaves the more you work out on it. Any thoughts?
If its a rock bruise or blister/hotspot stuff I run thru but pick some easy terrain for a run or two. If you think its inside the foot deeper and more than the skin use your own judgement, thats tricky sometimes...if your not sure I would take a day or two off and see how it feels then.
You will recover faster if you take a day off. Most of the time I come back stronger after resting my sore feet. But resting can be hard if you're in the middle of training for something, so most of the time I train through discomfort. Either works fine and it depends on what your goals are.
If my feet are really stinging, I'll take a day off, but if it is just one sore/hot spot, I will run keeping close to home so I can stop if I need to. I find that a hot/sore spot means I need to fix something with my form so I want to run while it is still tender enough to signal I need to stop.