I'm considering a 50oz Camelbak for cycling. Most of this will be 30 miles or less. However, I'm sure the 50oz probably wouldn't be good for longer races, given its limited capacity. One of my biggest questions is centuries. Is it better to pack lightly and then stop for refills or would you rather carry 100 oz the entire distance?
Also, what should I do about hydration? Should I pack 100oz of my own stuff or just go with water? Sorry for the somewhat newbie question, but I've never really had to deal with hydration before.