Just a note, google earth is kind of deceiving. It looks walkable, but really not. Major highways, swampland, woods.
There are some places....you can walk from EPCOT through the boardwalk area then to a pretty path that goes to DHS.
There are walking paths around most resorts.
A path from SSR to DTD.
I'm sure there are some more. But the WDW is not really a walk around the whole place type of area.