I ended up going ‘out out’ Saturday night after only planning on going ‘out’, not too pished, but 4am before I got to sleep, latte & a banana for breakfast, forgot my jacket, my C02 kit and dry bag for phone, brakes on scandal howling so took my soul (green mk3 26″), was glad of meatier tyres and dropper but I wasn’t on the best form, obviously. Just made it to feed station with the use of 2 gels, ok again after that but back tyre kept losing air (tubeless) for no apparent reason, ended up stopping in the pouring rain to put a tube in.
Did the 50k, Builth took me 3hrs 15, Rhayader 5hrs….. Much preferred it though, despite everything, a lot more technical, I’m not a fan of super long grassy descents.