It turns out you shouldn't believe everything you read on the internet. Or at least, if the internet gives you some information, use a bit of common sense to check you've been given an answer that feels right, rather than just taking things uncritically and at face value.
I wanted to know how far it was from Jerusalem to the Mediterranean.
So I asked Google:
You what? 1000 miles?
Well, I suppose it depends where in the Mediterranean you wanted to go. The middle of the label for "Mediterranean Sea" on the map, obviously.
Er, ... not. I wanted to know the distance to the coast. If you lived in Jerusalem, and wanted to go to the seaside, how far would you have to go?
Well, let's measure it:
About 50km then. Or 30 miles.