I searched for this topic, since the sisters hiked the Appalachian Trail in 2001, and couldn't find a mention. This is very interesting, as they hiked the whole AT, barefoot, then turned around and walked back!
Barefoot Hikers of PA: Barefoot Sisters Isis and Jackrabbit
Baxter State Park
55 years old, 5'4"
1/1/11 weight: 172 and grumpy
Lost 7 lbs on calories in, calories out
Went paleo/primal 1/1/12
Current weight: 144 and happy
Goal weight is 130 more or less