Hi guys!!! I saw a thread about using Ride on the treadmill. I have a bike with a trainer, but I got curious beacuse I love to walk and run! Guess what? It works! Beautifully too! The beat for inbetween the intervals worked out to 4.1-4.2mph. Naturally I could do the hill climbs at a faster pace than they went on the bike, but it wasn't too big of a clash with the music. When she did the jumps I just stayed with a hill climb. Spints and tempo sets I ran. Time just flew by and I got in a little over 4 miles before I knew it! If you don't have a bike but want to try this dvd, do it!!! I had alot of fun with it and now I can't wait to get on my bike and go RIDE!!!