In reply to UKC Articles:
Biceps is one of the most mind-blowing routes I've ever done. The low down crux pitch is 7a and completely out of character with the rest of the route , so making things nice and varied. The upper pitches, taken on their own, are probably not worth anything more than 6b+/6c - although my arms were cramping a bit by then!
Yet, I'm not in a massive rush to go back to Riglos. It makes for a great day/weekend out, but once the novelty of yarding on massive pebbles wears off, there is not much variation or interest to the actual climbing. Undoubtedly worth a visit, but maybe more as part of a larger trip to north-east Spain, as opposed to a destination in itself.