"to go hiking" 或 "to go for a hike" 是去爬山的英文表达。

来源：

"Hike" 是英语中的常用词，它本意是 "长途跋涉"，在这种情况下就是去爬山。

例句：

I'm going for a hike this weekend. (我这个周末要去爬山。)

Are you up for a hike to the top of the mountain? (你想去爬山峰顶吗？)

Hiking is a great way to get some exercise and enjoy nature. (爬山是锻炼身体和享受大自然的好方法。)