Start by checking the route, weather, water availability, and daylight. The right list depends on the trip—not on how much space the backpack has.
Use three zones
Place soft or less frequently used items near the bottom. Keep dense items close to your back so the load does not pull away from you. Put water, a weather layer, light, navigation, snacks, and a small first-aid kit where you can reach them quickly.
Review, reduce, remove
Lay everything out before packing. Remove duplicate tools and “just in case” items you do not know how to use. A smaller kit you understand is more useful than a large kit you do not.
Check the fit
Tighten the hip belt first, then shoulder straps, then load lifters and chest strap. Walk for a few minutes and adjust any pressure points before leaving.
FAQ
Where should the heaviest item go?
Keep dense items close to your back and around the middle of the pack, rather than far away from your center of gravity.
What should stay within reach?
Water, navigation, a weather layer, light, snacks, and any medication you may need quickly.