stapfam

All I would take is the normal spares you take on a normal ride. For me that is Tube, levers, patch kit, multitool. A 70oz camelback should last providing you can top up en-route, but Food. Do a lot of carbo loading the week before- every meal to be pasta- rice- bread- sticky buns etc. Have a breakfast an hour before you start and take plenty of snacks- Ceral bars- cake- dried fruit- cheese(for protein) And snack regularly,. Eat before you are hungry and drink before you are thirsty. If necessary set a time- ebvery 15minutes to eat a bar and a good sip on water. Then get hold of a couple of gel-packs. These will give you a boost about 20 minutes after you have taken them, so ideal if you start to feel a bit tired because you have not eaten or drunk enough. Then a clothing- have a showerproof- or water proof - or just an extra layer (The showerproof should do that)

Then on the other hand you could go mad and carry what I have to on the Tandem on our big offroad trecks. We have to carry these as the Tandem eats chains- tyres Tubes and does need adjustment as we go. But to be honest- If you need this amount then you need an extra set of legs to propell it up the hills.