Does anyone ride it on their 29er?
People ride it on all sorts. Hybrids, folding bikes, recumbents, fixies, tourers, top-end road bikes, slicked-up MTBs. Some nutter did most of it on a unicycle one year!
The terrain itself isn’t difficult, it’s gently rolling. There’s (usually) other cyclists around to ride with. No-one worries about what bike anyone is on (and it’s dark so you can’t see anyway!), it’s just a slightly longer than normal social ride, bit of a personal challenge but do-able by pretty much anyone on any bike. Just need the right mental attitude to ride a bike through the night.
The whole ride has a brilliant “attitude” about it. No one cares about times or even route. The route guide basically says “keep going north east, stop when you get to the beach”. Some folk stop at pubs en route. Some sit on village greens and get the thermos flasks out, a sort of midnight picnic. Some people absolutely bomb it, I know it’s been done in sub 6hrs. Everyone just finds a group and gets on with it. I rckon everyone should do it at least once, regardless of what bike you’ve got.