I purchased this shoe to use on both trails and roads, and it has met my expectations. The shoe is light and moderately flexible with minimum cushioning allowing more natural foot movement and a better feel of the trail, but provides better protection on rough trails than a comparable weight road shoe. I typically prefer Montrails because of their great heel fit and roomy toe box - they remain secure with no heel movement without having to cinch them down and have plenty of room for unrestricted toe movement - and the Streak is exceptional in both categories. I took them on a 15 mile run right out of the box and they were exceptionally comfortable from beginning to end.