On the other hand, if you prefer travelling in a more convenient way and you want to come by bus, here are several possibilities:
If you proceed from Madrid, there are several schedules. The station from where these buses leave is Avenida de América Station. You can check here the bus schedule: http://www.alsa.es/ You just have to put the date, select «One way and / or Round trip» and the information will be at your fingertips.
The bus station is located at: Avenue América 9, 28002 MADRID. It is accessible by underground lines 4, 6, 7 and 9.
However if you proceed from Zaragoza there is also an extense schedule. The station where you can take these buses it is Delicias Station. There are two different of companies: Linecar or Therpasa. You can check here the bus schedule: http://www.therpasa.es/horarios.php You have just put the date «One way and / or Round trip» and your information is at your fingertips.
You can also call to the information number of the station: 976 700 599.
The bus station is located at: Calle Rioja, Zaragoza 50011-33 ZARAGOZA.
If you come from Valladolid, there are several bus schedules. The station from where they leave is the bus station of Valladolid. You can check here the bus schedule: http://www.caminosoria.com/servicios/transportes/autobuses/1940-autobuses-valladolid-soria-zaragoza.html You just have to put the date, select «One way and / or Round trip» and the information will be at your fingertips. The companies you should choose are Therpasa and Linecar. The last one company has more availability. You can also call to the information number of the station: 983 236 308.
The bus station is located at: Puente Colgante 2, 47007 Valladolid, Valladolid.
If you come from Barcelona it must make an exchange in the city of Zaragoza. The station where you can take these buses, it is the Nord bus station. You can check here the bus schedule: https://www.barcelonanord.cat/en/inicio/ You just have to put the date, select «One way and / or Round trip» and the information will be at your fingertips.
You can also call to the information number of the station: 902 260 606.
The bus station is located at: Carrer Ali Bei, 8008013 Barcelona.
You can also reach the station as follows:
Undergroun: L1, parada Arc de Triomf
TMB Bus: Number 54
Train: Commuter Train, lines 1, 3 and 4