Way too warm! These boots have 400 grams of insulation & the Kokoda Trail in in New Guinea. A full grain-leather GTX boot would work much better. Even if you're going over Mt. Bellamy, it's just a little over 7,000 ft. Check these out instead:http://www.backcountry.com/store/ASO0023/Asolo-TPS-520-GV-Backpacking-Boot-Mens.html