There’s a whole lot to learn about Santa Eulalia del Rio, but there’s no need to feel overwhelmed. Before you set off in your rental car, let’s get started with the basic facts.It sits 298 miles to the east of Madrid, the buzzing national capital.If you’re traveling with the young ones and they’re tiring of playing road trip bingo, why not test them to see if they know what the population of this area of Balearic Islands is? (In case you’re not too sure yourself, it’s 31,300!)