Not a bad little publication for people looking for some ideas for days out:
Add it to this book, which (as the title suggests) has ideas on longer tours
The RiDE magazine’s website has others and more.
For other perhaps less formulaic ideas, have a look at several of the bicycle (on road) guide books and websites and even some of the car guides, too. Quite often bicyclists and even some car drivers do like exactly the same ‘twisty’ roads as motorcyclists. If nothing else, it’s a safe bet that not many bicyclists will be taking a motorway. Here’s an example of what I mean:
https://www.cyclingplus.com/cycling-routes/london-orbital/
Add it to this book, which (as the title suggests) has ideas on longer tours
The RiDE magazine’s website has others and more.
For other perhaps less formulaic ideas, have a look at several of the bicycle (on road) guide books and websites and even some of the car guides, too. Quite often bicyclists and even some car drivers do like exactly the same ‘twisty’ roads as motorcyclists. If nothing else, it’s a safe bet that not many bicyclists will be taking a motorway. Here’s an example of what I mean:
https://www.cyclingplus.com/cycling-routes/london-orbital/