How long it takes to resume running after a sprained foot is related to the severity of the sprain and whether the patient’s physique has been well rested and treated in a timely manner. If the degree of sprain is relatively light, after reasonable treatment and moderate rest, the swelling and pain will disappear completely in a week or so, you can try to walk and stand normally, and if the pain is not aggravated, you can start running in another week’s time. If the pain is not aggravated, you can start running after another week. You need to run gradually and make a good running plan, not to exercise too much. If the symptoms are obvious, it will take about two weeks, if the symptoms are completely recovered, walk and stand normally for a week, and observe that there is no aggravation of symptoms before starting to run. If the sprained foot is accompanied by a fracture, it will take more than four months to resume running after the fracture heals and the external fixation is removed for functional exercises. The time to resume running is related to the severity of the disease, not too early to start running exercise, because the running exercise is more strenuous, easy to make the tissue damage further aggravated.