Most summers my wife and I head out on a 7-10 day trek across the Alps. Last summer we did the Walker's Haute Route from Chamonix to Zermatt. I wore the Salomon XA Pro Mid GTX essentially a higher version of the Salomon XA Pro trail runners. They were a bit light for the rocky terrain.
Saucony introduced the Adventerra GTX at Outdoor Retailer and it immediately caught my eye as a candidate for our next trek. Not only a 4mm drop from heel to toe to enhance the hiking gait cycle but a very burly yet light Vibram sole and very supportive waterproof GoreTex upper. All of this in a 15 oz shoe/boot, not much more weight than a trail runner.
Weight: 15 oz. men's size 9
Heel/Toe Drop: 4mm