First off, I do not consider myself to be a "runner". I just started running this year and am still pretty ignorant with regards to gear and products, etc. I purchased these shoes as a trainer pair - one that I could wear for everyday training on the treadmill and road. They arrived quickly, though only 2 days before my first half marathon, so I was hesitant to wear them for such a long run before properly breaking them in. I wore them anyway - see, I'm like that. Let me just say that after 13.1 miles, my feet were the ONLY parts of my body that didn't hurt. I did not have a single blister, there was no pinching - nothing. These shoes are light, airy, and ultra-comfortable. My feet love me when I wear these shoes. Since I have three more half marathons scheduled for this year, I will now order another pair or two so I don't wear these out too quickly. I love them.