I intended to use this shoe for runs over 10 km and slower recovery runs. I have a neutral gait and am a mid-foot striker. My doctor recommended some stability shoes to help treat achilles tendonitis in my left foot so I thought I'd give these a try based on all the positive reviews. First things first, these shoes are stiff. And heavy. I've run 50 km in them so far and it's like wearing hiking boots. They take all the joy out of running. They're not very cushioned and they're taking ages to break in. The 12 mm drop is too high for me and causes me to heel strike. When I do happen to land mid-foot the shoes are too stiff to transition to the forefoot for lift-off. Ironically, my achilles tendonitis has improved greatly because I haven't wanted to run at all since buying these shoes!