去远足的英语表达主要有以下几种：

go for an outing to

go hiking

excursion

pleasure trip on foot

walking tour

根据具体的语境和需要，可以选择合适的表达方式。例如，在正式场合或需要详细描述时，可以使用“go hiking”或“excursion”；在较为随意的场合，可以使用“go for an outing to”或“pleasure trip on foot”。

1. He suggested that his classmates go for an outing to the Oriental Green Boat.

2. They went hiking in the mountains last weekend.

3. Today is sunny. Let's go hiking.

4. She wants to go for a tramp in the country.

5. The family went on an excursion to the countryside.