Hi Jan,
It is about 45-50 mins drive from Condado. Just head for the Mar Menor strip/La Manga club and drive on past the turn off for La Manga club. A short while further on you will see the sign (brown background type) for Calblanque national park/playa's. You will turn off and head down a gravel track for five minutes or so and to get to the surfing beach just keep bearing left whenever there is a junction in the track. They are al signposted, in Spanish of course, but you can get the gist of what they mean.
I see the photo's have not come up - I will try again this morning. The bay we visited is the next one along from the surfboarders beach. It was just a short stroll along and quite interesting on passing seeing all the Spanish families set up for the day with their gazebo tents and portable dining tables and chairs, just sitting chatting away watching the waves roll in. Like walking on past someones dinner party with the tablecloths set, wine on table, full bifta - very civilised I must say.
Regards,