High Speed Treadmill Training

Please provide your science. You have clearly demonstrated a lack of knowledge about both physics and biomechanics in your post. I am genuinely curious to learn about some of the literature though.

Charlie has advised people to use treadmills when inclement weather prevents running on softer surfaces. Nearly every distance and mid-distance coach in existence utilizes treadmills when inclement weather exists, including Salazar. Is that enough of a testimonial for you?