Jump to: Does your ideal running form change on a treadmill versus outdoors? 3 Common Treadmill Form Mistakes and How to Avoid Them No one is arguing that treadmill running and outdoor running are the same. From the surface type to the surrounding environment to the level of enthusiasm each typically elicits, there are a bunch of obvious differences. But do these varying features also translate to form differences? In other words, when you move your workout indoors, should you also change how you run? Here’s what run coaches advise their clients, plus common treadmill form mistakes to avoid. Does your ideal running form change on a treadmill versus outdoors? We’ll just cut to the chase: Whether you’re running on a treadmill or striding outdoors, your form should basically be the same, Kai Ng , a USATF- and RRCA-certified run coach in New Jersey and New York, tells Runner’s World.…