This machine DOES NOT HAVE AN ADJUSTABLE STRIDE LENGTH as advertised. Customer service told me that the incline/decline feature would adjust the stride length. Only problem is that after measuring and comparing the incline at its lowest and highest position, IT NEVER CHANGED. It remained at a constant 18". I'm almost 6ft and my wife is 5'7". 18" is NOT a large enough stride length for either of us to obtain a decent workout.