Just finished doing the Tucson, Mt. Lemmon climb trainer DVD and this is by far the hardest one I've done yet. Man talk about sweat, drank 4 bottles water and even ate a chewy bar. I thought the Lake Placid one was hard. The last 5 minutes of this one has you in the big ring pushing your 12 or 11 on the back and trying to maintain a cadance of 80. It was a struggle to keep it there and it did hurt a lot but I made it to the top. Man I'm loving these spinerval DVD's, nothing like outside but they keep you really focused to train harder. Took 1.5 hours and burned 1360 kcal. When's supper ready?