I just recently wore these on a 100km walk that we finished in 26 hours. They are the most comfortable shoes I have ever owned. When I got my first pair I wore them right out of the box for a 25km walk and they felt fine. As of now I own 4 pairs of these shoes and I am most likely to order another few pairs.
Now that I finished my walk I have started wearing them for runs on gravel and rough surfaces. They are great and I can't recommend them highly enough