The Brooks Cascadia is a trail running shoe that is designed for the long haul. If you're serious about distance training on trails, then the Cascadia offers the stable and stiff footbed that will provide you with the lasting support that you need.
The Cascadia also offers a significant amount of foot protection with the durable layer of TPU film that covers the mesh upper on most of the shoe.
As we at Pacers Running say, you can't go wrong with Brooks—and the Cascadia is a trail running manifestation of that statement.