Ryujin
Legend
Population density reduces the distances a little in the U.K. and Western Europe, but not drastically. The average person's radius is the same in the US as everywhere else - you might be in an area five time larger, but you don't habitually wander across deserts and mountains to visit the local supermarket.
The post apocalyptic wastelands of suburbia, yes, but no deserts nor mountains.
I did once have to explain to some Cuban government officials why we couldn't go to Montreal for the afternoon after visiting Niagara Falls though. Yes. Seriously.