Calais to Malaga

Hi, i am driving from the UK to Malaga over the Christmas period, leaving Boxing Day afternoon. Its about 1,500 miles. I will overnight at Aire de la Baie de Somme and plan to drive via Bordeaux and into Spain at San Sebastian. It should take 3 days.

Does anybody have any suggestions about camp sites just north of Bordeaux and in the Madrid area that may be open at this time of year.

I have a Rapido motorhome.

Any suggestions gratefully accepted.

David H