Separate out your food. If you’re backpacking through a city (like a trip through Europe) you might not need to pack so much food. If, however, you are taking a hiking trip and are camping in the woods, all your food stuffs will need to be packed with you. Keep these separate from the rest of your items, and place in a bag. If you are hiking you may also need to use bear canisters to keep bears and other animals away from your meals.
Keep snacks for hiking and walking around separate, as you will want to place these in easy reach.