I've used the CycleTravel route planner to plot routes from home but none of them really appealed. I suppose it is because I need the motivation of some sort of event to get inspired.
Having said that, I think that I've stumbled upon the perfect event :
https://www.ridetothesun.co.uk
My 70 mile ride was from from Glasgow to Edinburgh along Canal towpaths. I have a daughter who lives in Edinburgh so this looks ideal from a logistics post of view. The fact that it is a turn up and set off at a time of your choice and ride through the night is particularly appealing.
I've pencilled it in for next year as it's a bit too short notice for this year.