I have only done some short (2-3 week) self contained tours, so it would be harder to plan for a really long one. Our first tour was in such a remote area that we had to carry a backpack stove, fuel, freeze-dried backpacking food and extra water. Although those things were pretty light, they did account for some extra weight.
Our second tour we eliminated those things and ate out carrying extra food that didn't need cooking.
It was more expensive that way but much simpler.
We still were touring in the Oregon and Washington Cascades so had to carry sleeping bags, ground cloth, sleeping bag pads, tent, etc. which weighed quite a lot. We had no choice since there weren't hotels/motels on the roads we were riding.
The total of all of our gear was 70 pounds each... quite manageable on the bikes, although we rode much slower climbing those high passes in the Cascades than we were used to.
If you have any more specific questions, you can always email me. I got my travel tips from a friend who did the trans-America tour across America with the national part of our regional Alaska Lung foundation.
“The only way to keep your health is to eat what you don't want, drink what you don't like, and do what you'd rather not.”
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