In reply to Louise Stone:
Surprisingly there are one or two trad lines in Siurana, where a natural crack line has been left unbolted. The nearest decent multipitch trad is further north in the Montsec (e.g. Montrebei), which is a couple of hours drive. Montserrat also has some scary trad (or 'spaced bolts'), about 90 mins drive away. Then the pyrenees is stuffed with trad, of course.
But FWIW I agree with cyberpunk's comment, or at least the sentiment of it. Siurana is inarguably one of the world's finest sport climbing destinations, asking about nearby trad is a little bit of a strange question.