Changes

To hitch Southwest towards Madrid you are best to catch a bus towards the airport, which stops at a large shopping plaza. You can get out here and try to hitch from an on ramp to the A2, but you are better to walk along the side of the A2 for about 2kms until you find a large 24hr Gasolina-Restaurant. From here it is easy to approach drivers for a lift to Madrid.

Catch either bus 27 or 52 to Centro Augusta. From here follow the N-232 for 5 minutes till you reach a gasstation. There is a lot of local traffic, but the service workers are very nice they arranged me a good lift to Logroño.