I'm 64. I carry about 30 lbs per trip. That's about 1/2 what I carried when I was 25 and I go about half as fast.

When I hike alone this includes a PLB, first aid kit, signal mirror, whistle, 10 essentials, bear spray, extra clothes, tent, sleeping bag, etc. If hurt I want to get to stay alive, warm and comfortable until I get help.