I think this is a cool goal. Running a 100 miles "at a clip" in the mountains has been a distal goal of mine as well. There is something almost tangible when uttering the words "I can cover 100 miles in a day."My weird and totally meaningless goal is to be a person who has snatched 100k(g) in competition and run 100k(m) in the mountains. I'm halfway there.
I was training for the San Juan Solstice 50 M but we moved north that summer. So now I'm looking at some self supported stuff up here.