Denver is amazing. MUPs everywhere, called greenbelts. They run through every neighborhood.

I commute to work 15 miles, 5 of which are on road, the rest on MUPs. When on the MUPs I NEVER cross a road. Eventually 3 miles of road will be cut out and the MUP will connect in the middle, but for now I have to take a connection via road.

It's super well maintained, and I can take the MUp all the way from the s.e suburbs to downtown. Pretty cool, and the bike lanes are really awersome, though not widespread enough for my liking.

Lots of people on bikes, many dedicated roadies and MTB'ers and lots of commuters.