Questions about example sentences with, and the definition and usage of "Hiking"

A: walking a long distance, usually across country

A: To climb a mountain or walk up in a slant or walk around a area with trails

A: Thanks but only use here that's it.

A: It literally means that going hiking / trekking with nothing, not even a watch, can make you feel uncomfortable / unsafe.

The meaning, I think, is that you should be well prepared before going hiking. You should bring water, a compass, a phone etc.

A: Walking in the wilderness is hiking. Trekking is taking a long, difficult journey. It might be hiking without a trail through unknown territory.

A: Hiking is walking through nature.

A: Example: I was hiking at the mountains (not so English sounding) opposed to I was hiking in the mountains (more English sounding)

A: Climbing up was easier than going down, because at least going up there were goals that made the pain bearable.

A: The phrase sounds natural, but it could be better.

"Hell" is a place. So usually you don't say " make you feel like hell" -
you would say you "feel like you're IN hell", or "hiking in this weather FEELS like hell".

A: flying MY drone or flying A drone. Don’t forget the article!

A: For simpler I would say
"Hiking is a lot/really fun" Hiking already implies that you're on some sort of mountain or hill.

A: Hiking builds leg muscles.

A: I would say:
Hiking is my favorite activity. On some of my holidays and weekends, I go hiking with my friends. Hiking is hard work, but every time you cross the beautiful mountains, rivers, and even deserts, you realize that it was all worthwhile. The photo below was taken two months ago, when I was hiking at the Nei Menggu grassland in China.