Originally Posted by
staehpj1
The exception is when/if you need to carry multiple days of food and water, but that can sometimes be planned around by using food drops/caches or sometimes minimized to just a short section here and there and carried on your back if just for a day or two.
Water can be the biggest issue. I've carried mutliple extra bottles using the longflap on my saddlebag, jersey pockets, and handlebar bag. I also have an ultralight nylon back pack that I mostly use for days off the bike, but in an emergency it can be worn on the bike too.