Here's an account of hiking seven peaks barefoot in New York's Adirondack Mountains. These mountains have a mix of trails, and in some places they're some of the worst trails I've ever seen: straight up or down the mountains, totally washed out, tumbled rocks and tangled roots, and everything muddy and slick. Having said that, as long as you can tolerate a slow pace, the trails are reasonably forgiving for bare feet, since there's lots of dirt and mud, and the typical Adirondack rock (anorthosite) tends to be pretty smooth. And sometimes the trails are nice....
See what you think:
https://thelongbrownpath.com/2018/08/31/seven-adirondack-high-peaks/
See what you think:
https://thelongbrownpath.com/2018/08/31/seven-adirondack-high-peaks/