Many bikes seen on this road. Obviously well known locally. I highly recommend the extra hour that the 435 will add to your travel time to from the Huelva/cadiz coast. I really enjoyed myself, and the only reason this is not a 5 is the pavement which is uneven and patchy in some areas. Also a agreat opportuntiy to stop in the Jabugo village. Jabugo is to Jamon what Bordeaux is to wine, and its right along the way.
Aracena - Huelva Secion: Across the pleasant Sierra de Aracena, this road has good quality tarmac. Loads of fast sweeping bends will have you smiling in your helmet, thinking you're Joey Dunlop on the mountain section of the IOM TT. Big fun with very little traffic. Nobody goes to Huelva.