Some of the ones I scratched off the list:
MTB
UTAH:
Shredding Lesser-Known Slickrock in Moab
COLORADO:
OREGON
AUSTRALIA
NEW ZEALAND
SWITZERLAND
PERU
The rest of the so-called IMBA Epics
HIKING
national geographic: best-trails
more to follow
This page is mostly for me, so I have a place to log and remember them…because I have already forgot a few.