Lone peak 3 have little support in the heel area. These shoes are made for large volume feet. The shoes felt great on flat ground and muddy clay with lots of cushion and excellent traction, but once I hit the steep trails with hard packed uneven terrain, my ankles were twisting and strained. Nice wide toe box, great traction, but lacking in the support needed for rough uneven trails Running strait up and down inclines felt great for traction and toe room, however whenever I ran across an incline where the trail tilted, my feet slid inside the shoe from lack of shoe structure. Unlike traditional shoes the heel cup is soft allowing little ankle support. The shoe was way too stretchy and soft, in the heel area, to keep my foot from traveling around inside. I live near Durango, CO and tested these shoes on very steep trails with diverse conditions, they failed to give a stable base and hurt my ankles.