Wearing worn out shoes to exercise can increase your risk of hip, knee, ankle and foot injuries. How often should you replace them? It is recommended that you replace exercise shoes between 300-500 miles depending on your activity, style, body weight, and the surface you exercise on. For most people, this means replacing shoes between 3-12 months. After 12 months of use, most athletic shoes, regardless of the activity, have lost their support and mid-sole cushioning, even if the outside looks fine.
