Hi Louse
I can't remember what the local karting track is called but the directions from Condado are as follows:-
From the main entrance take the motorway towards Alhama/Murcia and go to the large roundabout at the end of the road, go almost all the way around the roundabout as though you are going back towards Condado but take the service road off to the right it is easy to miss and end up back towards Condado so take your time as there are no signs. Go along the service road running alondside the motorway and then take the first road on your left (looks like a dirt track) you might see a small karting sign there. The karting track is just up that road on your right, only 10 mins from Condado and they do speak a little English enough to get by.
There is also a bar, pool table a small play area and they serve food but not an extensive menu
Hope this helps