Valladolid-Campo Grande railway station is integrated into the Spanish high-speed network AVE. The Madrid-Valladolid high-speed rail line was inaugurated on 22 December 2007. The line links both cities, crossing the Sierra de Guadarrama through the namesake tunnel, the fourth longest train tunnel in Europe. Valladolid will become the hub for all AVE lines connecting the north and north-west of Spain with the rest of the country. Trainsets used on this line include S-114 (max speed 250 km/h (155 mph)), S-130 (Patito, max speed 250 km/h (155 mph)) and the S102 (Pato, max speed 320 km/h or 199 mph). This line connects the city with Madrid, which can be reached in 56 minutes.