RWGPS routes have been posted for Cambrian series 1A to 1E. The Cambrian routes are still free and so these are indicative routes and come with a health warning - I've curated the tracks rather than ridden them, but in most cases I have ridden the roads in the past, and I have also cross-checked the route to the Ordnance Survey maps and Google Streetview to check that the lanes are ridable (that is a fairly loose definition, just like some of the surfaces, but that is part of the charm of the Cambrian Series).
You will notice some "features" especially on the 1B but also the 1E, that I have set the routes up (as these were my creations) based on my original shortest route intention. These features involve riding the straight road that goes up a socking great hill and back down again rather than following the valley floor road that is flat but takes a slightly longer option. You may wish to alter the route here, they are free, but don't blame me if you follow the GPS route blindly and take in a couple of gratuitous (very generously gratuitous) hills.
The 1C is split into two tracks, inbound and outbound as it is an out and back route. Some of the other events have short out and back sections, again, be warned if that gives your device some challenges, you may want to edit & split the track.
I haven't done anything with waypoints, points of interest or anything like that, so you will have to mark those yourself. There's several reasons for this (apart from my fear of getting it wrong) primarily that you can start any Cambrian Series ride from any point on the route where you can get proof of passage (I started & finished the 4C in Caersws as it has a convenient rail station)
I will gradually work on the rest of the events, but if anyone has one they would like to prioritise - please let me know by return.