Brad's recommendations are good. June-Sept. I don't wear boots at all. All fall I used the Hoka Tor Ultra Hi and Altra Lone Peak Mid, which are sort of a boot. That included multiple off trail loads over 100 lbs, knee deep snow, and temps down to zero. Many ways to skin a cat, but light boots and shoes are my choice at this point.
Non waterproof trail runners are all I use for summer backpacking. The Altra Lone Peak Shoes will be what I try next.
