Fantastic road with unbelievable scenery. Potes offers good cheap accommodation. (Theres a small gift shop in the cobbled centre that offers double rooms for 42 euros). Excellent spot to put up your feet after a brilliant day out. Keep your eyes out for the mountain goats on the road. More switchbacks towards the road summit than I could count!
Just come back from this area. As Rushjob says - great bike road. Stopped in a hotel in Riano, 50 euros for the room. The road out of Riano south towrads Lean was fabulous for about 50 minutes then turned back to Riano. Few cars, very occasional bike.
Starting from San Vicente take the N634 before turning off onto the N621 to Unquera. Starts off a nice low level road with sweping bends & scenery before it starts to climb into the Picos de europa Mountains. A fantastci run along a mountain gorge with tight bend after tight bend before the road calms down a bit as you approach Potes. As you leve Potes the road gets a little narrower and realy starts to get intersting as you start to climb up to the summit at Puerto de San Glorio at 1609m - there is view after view of fantastic mountain scenery and more bends than you can shake a stick at. As you begin to drop down towards Riano the road surface changes for the better and the road is slightly wider, rewarding you with faster sweeping bends and a few good straights until you arrive at Riano which is surrounded by lakes... there is a service station at the entrance to the village with the best view I've ever had whilst fulelling and a great little Cantina just behind the service station to refuel the rider.