Pain around the Achilles Tendon is common especially for runners. Another common condition is pain under the foot close to the heal, sometimes you can develop a bone spur in this area that can be very uncomfortable when you walk.
Mortons Neuroma is also common especially in women. The pain comes from a nerve that gets pinched in between the bones at the fore foot. All of these conditions are treatable and most often the pain can be eased off within 4 - 6 treatments. Read more here