This is a very impractical journey to take. I would suggest breaking up your trip by stopping in Madrid, Zaragoza, Burgos or Leon.
Read more about Barcelona.
Barcelona to Pontevedra by BusThe bus from Barcelona to Pontevedra is run by Vibasa. Their website is awful - it is impossible to find out how long the journey takes, but it will most likely take about 16 hours.
The bus leaves from Barcelona Sants station. Read more about Bus and Train Stations in Barcelona
Barcelona to Pontevedra by TrainThere are no direct trains from Barcelona to Pontevedra. The only way to get there is via Madrid.
Renfe.es, Spain's official rail website, is a mess and has been described as "like Alice in Wonderland, where nothing seems to be what it really is" by Trip Advisor. Residents of Canada and USA should use Rail Europe instead to have their tickets delivered to their home address. Other citizens should also use the link below to check timetables and then buy tickets in person.
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Barcelona to Pontevedra by CarThe 1,200km drive from Barcelona to Pontevedra takes about 11 hours, traveling mainly on the A-68 and AP-1 roads, A-231, A-6 and AP-9. Note - AP roads are toll roads.
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Flights from Barcelona to PontevedraThere are no flights from Barcelona to Pontevedra.
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