A really good selection of tight hairpins, fast sweepers and a nice view as the road rises up from sea level to around 1000m. As this is rural Spain, you may need to pay some attention to farm animals straying into the road (although I didn't see any on the way). This route is ideal if you've just got off the ferry from Santander.
This road is a good combination of climbs and valleys snaking north and a great alternative to the motorway if heading north towards Madrid. It's a fast road with sweeping bends and long straights for overtaking. Very little traffic. It runs through the national park in the south with green scenery, olive groves and some mid-height mountains.
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.
Did this route on new years eve 2010. Early morning. Completely deserted. Lots of lovely bends around the mountains and through the valleys. Not a fast route through Spain due to the many bends many of which are quite low speed. But amazing scenery. Well worth a detour for this.
Good road which, in conjuction with the N110 and SO920(as a shortcut),makes a longish but worthwhile detour. The SO920 in itself is a fantastic road with tight hairpins, open straights, and the occasional village - well worth the effort while the N110 is more open, faster, and the scenery a little less exciting. Generally the surface is good and they are relaying sections as I write. If heading North/South, you can use this instead of the A1/E5 Autovia if you have the time.