A hillwalker is a person who walks over hills for pleasure, not to get to work or catch a bus. You hear the word most in British English, especially in Scotland, Wales, and the north of England, where a long walk on high ground is a normal weekend hobby. A hillwalker wears boots, carries a pack, and follows paths; they are not, in the usual sense, climbing rock with ropes — that person is a climber or a mountaineer. Though actually the line is messy: some British “hills” are huge, and some hillwalkers go very high. The ending -er is the person. The activity itself is hillwalking. Americans are more likely to say hiker.

健行者（英式；指在丘陵健行的人，不是攀岩、登高峰的那種登山者）