Take the main route out of Nerja along the coast road (N340). The first section is fast & flowing and used by the local bikers for a spot of road racing so watch those mirrors. The road is wide with a quite a few of uphill two lane stretches so you can keep the gas on. Good scenary for those who are bothered, but this is a riders road. La Herradura is worth a drop in and if your feeling brave, head inland from Almunecar to Otivar and onto Granada via some tight & twisties road through National Parks or continue along the N340 to Castell del Ferro (an interesting fishing village) for lunch & then ride onto Berja.
A really exellent road and definitely one of the best in the area. Winding along at around 1000m through some low mountains, here lies a section of fast bend combinations that are hard to beat. A very rewarding stretch to ride fast, and mostly very good surface and good corners that give little in the way of nasty surprises. Highly recommended. Can be combined with the A396 from Ronda, a beautiful little city that makes a good stop.
Found this road by chance, heading of the Embalse De Béznar, great mountain road, all the way over and down to the plains heading in to Motril. Great road surface all the way up to Guájar, from there on the road is a bit slippery. After this get ready for the views on the N-323a!
From Grazalema take the stunning mountain road (CA531) to Zahara. Super fast cross country sweepers to narrow mountain passes with incredible views