52k with 590 mtrs of climbing, so you will be entitled to a snooze after lunch! Shorter to coffee so we get there before any of the other clubs, hopefully, but it does mean the return trip will be 10k longer [todays question children-how far to coffee bearing in mind that the clocks will have changed?].
About Sunday morning rides
A pleasant Sunday morning ride, at a modest pace and in good company every other Sunday. Various start points.
This article describes what you should consider bringing with you.