@jefmcg
No idea what my longest distance is* but I rode to London from Feltham when I lived there, did a night ride to Brighton, rode back to Feltham, then to London Fields, did the Dynamo and then got a choo choo back from Diss, then rode back to Feltham.
Couple of times I have bimbled from London to Cardiff during the day, for a night ride to Swansea etc - all 200+ milers. Oh, and popped down to Stonehenge and up and around with a few on here, to raise some bobs for H for H.
Longest non-stop would probably be either NW London to Swindon or Stonehenge...+/- 80m to either. One Cardiff ride, it pelted down, from start of play until 23:15. It felt like a thousand miles with no hiding place. Same for cold rides - brrr!
For true grit and distance gobbling, look no further than CycleChat's very own
@zigzag - Rimas Grigenas, who can knock out the odd Marathon in 3:27 and a few seconds, and also do this. And he didn't even win it!
https://www.cyclechat.net/threads/the-transcontinental-race-2013.136531/
There's no doubt about it - the bicycle is a wonderful instrument upon which to play a tune of any length.
*270 or so miles.