From El Prat Airport:
take C-32B road to Sant Boi, there take C-32 and after A-2 road to Cervera, take L-311 to Guissona. Around Guissona, in the rotonda take the 2ond exit and go into L-313, look for Ponts, in Pons go to the left into C-1412A, cross Ponts and take C-14. Arround Adrall, take N-260. When arrive into La Seu d'Urgell take N145 till Andorra's frontier. In Andorra follow CG1 till the city centre.