Metro is a commonly used name in Europe for the the underground rail network. If you were to use these services, you would be taking an underground train in the city of Madrid.
The nearest seaports to Madrid seem to be Valencia (east) and Bilbao (north). Both are at about the same distance of ~200 miles (~300 km) from Madrid.
The answer would depend on whether the gaming season of 2011/2012 or the season of 2012/2013 was meant. The records of Atletico Madrid in the season of 2011/12 were clean sheets of 15 and largest wins of 4-0 (scored three times).
550 kilometres taking this route:
The driving distance from Madrid, Spain to London, UK is approximately 1,065 miles / 1,714 km
The oldest part of Madrid was constructed in the 1500s, during the reign of the Habsburgs. Since the Habsburgs were an Austrian Royal House (that inherited Spain through relations to the prior kings of Spain), the portion of Madrid that was built while the Habsburgs were in power is called "Madrid de los Austrias" or "Madrid from the times of the House of Austria" in recognition of the Habsburgs' origin.