Nice trip - This might be of interest:
A local run I take frequently is of about fifteen minutes, on youtube, starts at our finca at five hundred and fifty metres altitude, passes through our village of Jarandilla de la Vera, gets a bit interesting at about min 4:30, then climbs to the turning point after about ten minutes which is at eight hundred and sixty metres in the main square of the local mountain village of Guijo de Santa Barbara.
So, three hundred metres increase in altitude in six kilometres distance, in ten minutes.
The return trip covers the same route and time runs out passing through our village on the way home.
Great fun, but care needed.
The road is narrow in places and poorly sighted on most bends.
And yes, some of the hairpins are virtually full lock.
In many places, to the left on the way up and the right coming down, where there appears to be woodland, the trees are in fact on a near vertical drop of several hundred feet down the side of the mountain and barriers only in a couple of places.
http://www.youtube.com/watch?v=HgTuEgJxN0s