Strenuous walking or standing for long periods has an obvious effect on your feet. Other factors include ill fitting, poorly padded shoes, tight socks or stockings. Reduced blood circulation to the ankles and feet also causes tired aching feet.
There are a number of systemic diseases that can lead to aching feet. For example, people may suffer from a diabetic foot, a condition where there is initially severe pain and then loss of sensation in the feet. Other diseases that could lead to foot pain include arthritis.