Train operators in Spain

Spain has the largest high-speed network in Europe with the connection between Madrid and Barcelona being its busiest line. The rail network is maintained by ADIF while the dominant state-owned operator is Renfe. Yet while Renfe dominates on long-distance routes, there are also local and regional routes administered by the Spanish regions. Spain stands out within Europe’s rail network in having not two, but three different gauges (tracks): traditional Spanish broad-gauge, Western "normal" gauge for high-speed services, and narrow-gauge for local and mountain railways.