The longest hikes were made in different ways. By the Annapurna Circuit and Sanctuary trek we didn’t had to carry any food (except some energy bars and Snickers) or tent (though we carried your sleeping bag and Thermorest) since we stayed in Guesthouses along the way and also had your meals there.
For the Across Zanzkar trek we brought food and tent but we had the help of some horse to carry a big part of your load. Our backpacks were just filed with some clothing and other personal belongings.
The trek in Corsica was done with carrying all the camping equipment and food for 10 days by our self.