I wore these shoes in three half marathons in 2 months with ease. With running, or any demanding exercise for that matter, your shoes are EVERYTHING. These shoes blow away any other shoes I've had for both running and cross training!!! Once you break these bad boys in your feet with love them! Never buying any other shoe again.
The fit is perfect for my feet. Excellent grip in wet and dry on mixed terrain. I have gone about 50 miles (5 X 10 mile runs) so can't speak to durability yet.
I find the shoe roomy. The problem is there is a newer version that seems way larger for the same size. I definitely recommend trying them on even if you've worn them for years as I have. The shoe is great for technical trails. I abuse them and then hold up to it.