Well, that depends. 2 adults from Valencia to Madrid and with return for 70€ at a max speed of 300km/h. We should also take in consideration that planes are c

Well, that depends. 2 adults from Valencia to Madrid and with return for 70€ at a max speed of 300km/h. We should also take in consideration that planes are cheap because they have become the main mean of transport for long distances for the last decades. I can't see why we couldn't do this with trains. Invest in infrastructure and use it as much as we can.