I have had two pairs now both with about 200 miles on them before I found them worn out and not useful for running in. They started out great, fast, light, great traction, good cushioning. The problem is that after running in them for around 200 miles they lost all of their cushioning and support, both with the foam in the sole and the insole themselves. They were so packed out and smashed that I had to stop running in them from leg fatigue and pain. I am not a heavy person, 165lbs, so I shouldn't be able to destroy a shoe that fast. I called to have them considered a warranty issue since Altra says you should get 300-500 miles out of them. I was told that I first had to send them back to the place I purchased them. Shouldn't it be the manufacturers responsibility to fix a problem with their product, not the store selling them? I purchased them from a brick and mortar store 500 miles from where I live and it isn't that stores responsibility to fix Altra's problems. Second, they said if it was after 30 days (Now, I actually put 200 miles on a pair of shoes in 30 days, but I would guess most people don't.) Altra could only offer you 25% off of a new pair purchased directly from them. Anybody paying full retail price from the manufacturer is overpaying because with the internet you should be able to find a reduced price somewhere, so offering me a coupon for 25% off only good at their website doesn't save me money, and on top of that doesn't get me a warranty. I was told to purchase them from a store that offered returns on items after Altra's 30 day policy expired. I would love to keep running in them, but there is no way I can afford $110 or even $82.50 for as many pairs of shoes I need for my training.