Wessie,
Ho ware you getting from Fuente Dé to Navia?
No matter, Just looking and the route I would have done takes over 8 hours in the saddle.
Right, seeing as you are probably going at least some of it via the coastal motorway then on the coast I can recommend these places:
Cudillero.
If it's dry:
Luarca: If you want a (very) twisty road then come off the A8 at either Cudillero or where I "live" Oviñana just after the San Pedro bridge. Left at the roundabout, over the overpass, right at the next one. There's a petrol station just after Novellana if you need it. Stay on that road all the way to Luarca. It becomes the N634 just after Canero. Zoom in to the Canero bit because there's a double roundabout system like the one in Oviñana but underpass. You should not have to return to the A8 after yuo come off, if you do, get back off it at the next junction.
If you're on the N634 then take the right turn after the GALP petrol station and follow the road (veers left) into Luarca via the lighthouse (one way after the lighthouse) because it is the best view in. At the bottom you will see the harbour and some round balls on the pavement, you can park your bike there or against the railings. Bars are on the left. Biker friendly.
If you're on the A8 then take the first exit you see for Luarca and then you're back on the N634, petrol station......
Cabo Busto: Bit of a faff to get to from the N632 (Queruas junction) but a very nice lighthouse and clifftop view with a big parking lot. It's convoluted but signposted (don't follow the NAV because there is a preferred route and it is signposted) The word for lighthouse in Spanish is "FARO". There's a famous bakery there that often has a queue of people outside if you like that sort of thing.
Puerto de Vega. Make sure you get all the way to the sea wall and harbour for best results. There's a castellated sea wall where you can park your bike and there are bars on the left. The one on the sea wall may or may not be open. Bikes in plain sight but there's no need to worry around these parts.
From Navia. The road to BOAL is the AS12 and well worth a go. The first 24kms are a biking joy, followed by a few kms where you must be more careful and then fast again.
I recommend this circuit:
AS12 BOAL AS12, AS13 to San Martin de Oscos, AS362/AS33 to Santa Eulalia de Oscos. There look for a restaurant called
Casa Pedro and ask to sit on the terrace for lunch. Be hungry or oder a sandwich, the portions are big!
Some 20kms or so after BOAL you will round a corner and see a wooden fence with a parking area. Behind that parking area is a dirt road which leads to a restaurant that looks like a bunker if you need refreshment. Opposite that parking area there is a cut through which takes you to La Garganta and Sta. Eulalia de Oscos through the windfarm but I think you need a guide to take you through there. But if you're feeling adventurous take it, otherwise stay on the AS12/13.
The AS27 will take you towards La Garganta and then Vegadeo. Just before Navia (on return leg) I can highly recommend a little tiny harbour well worth a visit called
Viavelez. You'll see what I mean when you get there. Bar on the harbour and a short leg stretch to the sea wall.
Here's the route:
https://www.google.es/maps/dir/Navi...aed02471844!2m2!1d-7.0485041!2d43.4646918!3e0
and here's a link to a video of the road from La Garganta into Sta. Eulalia (which you'd be doing the other way around). You may have seen it on another thread.
https://www.youtube.com/watch?v=yJJBTQo2Ms8&feature=youtu.be
Enjoy,
Fred