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Train system in Spain is modern and reliable, most of the trains are brand new and the punctuality rate is one of the highest in Europe, the only problem is that not all the populated areas have a train station, sometimes small towns don't have one, in those cases you need to take a bus.
Another issue with the Spanish Rail network is that the lines are disposed in a radial way so almost all the lines head to Madrid. That's why sometimes traveling from one city to another geographically close to it might take longer by train than by bus if they are not in the same line.
Always check whether the bus or the train is more convenient.
Bus travel in Spain is increasingly an attractive option for people traveling on a tight budget. Thanks largely to European Union funding, Spain's road network has vastly improved over the past twenty years, so bus journeys don't take nearly as long as they used to.
There are lots of private bus companies offering routes to all major Spanish cities. If you want to travel around Spain by bus, the best idea is to go to your local bus station (Apart from Madrid and Barcelona, most towns and cities have just one) and see what is available.
Traveling by bus in Spain is usually reliable (except on peak holiday days when roads can be very crowded and you should expect long delays on popular routes),coaches are modern and comfortable. You can expect to pay about 8 Euros per 100km.
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