I've got a couple of routes in mind that I could turn into 150km, or 200km quite easily. Thinking about a 150 to start with as a first recumbent Audax. While I can plot the routes quite easily, and go out and ride them I have no idea how to do them as a DIY.
Also, if doing a Perm, can I jump onto the route at any point or do I need to start and finish as instructed? Boudicca's revenge 200 goes almost past my doorstop, so to speak