You cannot walk from the CBR to any other resort or park. You'd be out on the highway and the distances are long given all the driveways/parking lots, etc.
I would not recommend walking, it's too far. Take the Disney bus there and back or you can drive to EPCOT and because you're a Disney resort guest the parking is free.
WDW really is not set up for walkers on the roads. Drivers sure aren't looking for walkers so it could very dangerous. It is much easier to just take the bus.
You cannot walk from the CBR to any other resort or park. You'd be out on the highway and the distances are long given all the driveways/parking lots, etc.
In 2002 I did walk from Caribbean Beach to behind EpCot - not exactly sure which country but I know it was the countries!
and I walked over to Pop from Caribbean Beach