No, it is only about 1-1.25 miles from the DTD area near EOS to Crossroads. I could easily walk that, but I know people that would consider it too far. It depends on your level of stamina.
We have stayed at the Double Tree on Hotel Plaza Blvd. in DTD and walked over to DTD. Crossroads is about a quarter mile further out to Rt.535 then across. We have walked from the Crossroads to the hotel and then to DTD after that. With all the walking you do at WDW it is really just a bit extra exercise. We are now 60 and 70 and would still be walking it if we hadn't bought DVC. It is very doable.