I am riding it on monday and my fantastic bike only has one set of bottle bosses on it, so I can only cage one on the frame, I can cage two on my saddle (with a tacx bottle mounting thing) but they have a habit of flying out and hitting the person behind me in the face. It would also involve carrying LOTS of foot in my jersey pockets.
Alternatively I could bag it, 2L in the bag and a bottle on the frame with electrolytes in. Would make it easier to carry shit tonnes of food and I could still gel up in the outer jersey pockets.
There are 3 of us doing it semi-supported, as in there is a chance for a feed station with some people we know but only potentially.
Also any other advice? We are starting from keswick seen as that is where we are based.