Kefalonia is roughly 780 square kilometres in area, making it the largest of Greece’s Ionian Islands and about the 6th largest island in Greece overall.

Here’s the quick scoop:

  • Most sources put the island’s size between 773 and 781 square kilometres (about 298–301 square miles).
  • Its coastline is about 254 kilometres long, so it feels quite “big” when you drive around it.
  • In rough shape terms, it’s up to about 80 km long and 45 km wide at its broadest points, though it narrows in places.

So, if you’re picturing it for travel: it’s large enough that you can’t really “do it all” in a single casual day of driving, but small enough to cross from one side to the other in a couple of hours by car, depending on the route and summer traffic.

Information gathered from public forums or data available on the internet and portrayed here.