HOW TO GET TO TARRAGONA: Tarragona is 100 km south of Barcelona. "El Prat" International Airport Barcelona is 10 km from the city. 1st step: You can get to Sants Estació railways station (the central station), situated in the centre of Barcelona in three different ways: a. By train Trains leave from for Sants-Estació every 30 minutes. b. By bus (AEROBUS): Buses leave for the Sants-Estació railways station every 15 minutes. c. By road (taxi) ... but a taxi from the airport to Sants-Estació costs about 3,000 pesetas. 2nd step: How to get to Tarragona from Sants Railways Station? a. By train (the easiest way).Trains leave for Tarragona from Sants Estació every 55 minutes. 2. By bus Hispania buses leave Barcelona for Tarragona from the Maria Cristina underground station (Line 3) on the Avinguda Diagonal (Barcelona). Another possibility is catching one of Hispania Igualadina buses that leave from Sants Estació to Reus. Some of them are not direct to Reus and stop in Tarragona.