Thank you, Simon.
I have created what I hope is a fairly good GPS version of the full route, based on this website:
http://www.larutaenbici.com/en/etapas-carretera
https://www.dropbox.com/s/21hm7urtbf9eir7/Ruta de la Plata.GPX?dl=0
Here are some notes to help anyone who might want to ride it:
1. The website caters for bicycle riders, ‘on-road’ and ‘off-road’; I used the ‘on-road’ version, picturing these in my mind’s eye as conventional bicycles, ridden by normal bods, as opposed to mountain bikes, bouncing their way along muddy or rock strewn paths.
2. There were some parts (not many) where the download tracks obviously hacked off down some roads or tracks that are not shown on a Garmin map. These I had to work my way around, using what i hope are sensible alternatives.
3. I have included the website's 12 tracks, which I have coloured cyan. The route, is the usual Garmin default colour, magenta.
4. The website's 12 cyan tracks were created to run south to north, from Seville to Gijon on the north coast. These I have left as they are so that they follow the same order as the website from which they were lifted.
5. To create the single magenta route I have reversed the direction, believing that someone from the UK is more likely to go north to south.
6. As the 12 tracks are aimed at cyclists they are quite short individually. Logically, a motorcycle rider will go further in a day or in a stint. If you do, simply amend the route, dragging it away from any towns or cities that you want to miss out.
7. Similarly, whilst the magenta route sticks reasonably faithfully to the bicycle routes, it might sometimes be sensible to hop on to the motorway to act as a bypass. A good example might be when leaving Gijon itself on day one.
8. As usual, I created the route on a Mac using BaseCamp. I then hosted the file on Dropbox in a .gpx format. This means that it should open straight up in BaseCamp or Mapsource or in any software that is capable of reading gpx exchange files. That being said, sometimes the movement of the file between a Mac and Dropbox changes the file extension from .gpx to .txt This changes it into a text file, meaning that you get a load of text and no routes. Do not panic. Save the file to your computer and rename it by deleting the .txt extension but leave the .gpx bit. All should then be well.
9. Need places to stay? The website has hotel suggestions, as do lots of other sites. The website I have used to create this version of the Ruta de la Plata, is popular with bicyclists, who are really not so very different to motorcyclists....... They are just very often skinier. If a hotel is 'safe' for them - and their several thousand pounds worth of carbon fibre bicycle - it will be just as 'safe' (and friendly) for you on your motorcycle; trust me. Find the hotels here:
http://www.larutaenbici.com/en/recursos - Filter by stage and then by accommodation
10. I don't think there are too many glitches in the route but DO check it before you set off. If anyone spots any, sing up, please. Similarly, if anyone spots something and wants to say: "Mate, you've missed the awesome NS-123! It's well wicked." sing up, too.
Richard
PS The website is available as a downloadable app, too. It works well on an iPad or iPhone. Like the website, it gives a good mini-guide on where you’ll be riding and on things to see along the way.
http://www.larutaenbici.com/en/info-app
PPS If any wants wants to look at a whole bunch of other Pilgrims' Routes, have a look at:
http://www.elcaminosantiago.com/Camino-Santiago-Maps.htm