If you’re serious walker or runner, you’ll have to replace your shoes more frequently than the average person. Traditional athletic shoes should last 400-500 miles, and lightweight versions will last about 250-400 miles. If you regularly track your miles when training, you’ll be able to keep an eye on that. Otherwise, look for other indicators, such as aching knees after a run, shoes that lean too far outward or inward when placed flat on the ground and rubber worn off the bottom of the shoe.
To extend the life of your athletic shoes, Sine recommends having a separate pair of shoes for work or leisure.