0
550 kilometres taking this route:
600 kilometres taking AP-7 ZARAGOZA to AP-2 ZARAGOZA, and then taking AP-2 & A-2 to Madrid.
475 kilometres (295 miles) taking this route:
When AP rises AVC falls
If you are driving from Madrid to Barcelona, the distance is about 600 km taking A-2/AP-2 (to Barcelona via AP-7).