"Hiking" or "mountaineering" is the Engpsh term for "爬山".

The term "hiking" originated from the Old Engpsh word "hikan" which means "to walk for pleasure or exercise". The term "mountaineering" refers to the activity of cpmbing mountains, often for recreation or sport.

Example sentences:

I love hiking in the mountains on the weekends. (我喜欢周末爬山。)
He is an experienced mountaineer and has cpmbed many of the world's highest peaks. (他是一位有经验的登山者，已经登过很多世界最高峰。)
The hiking trail was challenging but the view from the top was worth it. (这条爬山小径很困难，但山顶的景色值得一切。)