We once did a monumental and fondly remembered ride in this nature.
It started one after noon in a pub, we had a vague target and all-night passes. So down to the Isle of Wight ferry we pootled, over to the island, and hit the hills. Pub stop for dinner and off again. Prearranged kebab stop at 2am at the other end of the island.
Then there was some vagueness in the dark including sitting on a hill under a moonless cloudy sky in utter blackness arguing which way was up.
Back to the ferry by 7am to the ferryman’s exclamation ‘you’re up early!’. Then Pete fell asleep whilst riding his bike.
Home late morning so not quite 24hrs but a bloody good ride!
Hope yours is equally memorable 😀