Hiking refers to a long vigorous walk, do you like to hike?
I like to hike every now and then.
Very cool, hiking is the perferred term for the exercise in the United States and Canada.
thats good to know.
Hiking
Hiking is the preferred term, in Canada and the United States, for a long, vigorous walk, usually on trails (footpaths), in the countryside, while the word walking is used for shorter, particularly urban walks. On the other hand, in the United Kingdom, and the Republic of Ireland, the word "walking" is acceptable to describe "all forms" of walking, whether it is a walk in the park or backpacking in the Alps. The word hiking is also often used in
Thru-hiking
Thru-hiking, or through-hiking, is to hike an established end-to-end long-distance trail with continuous footsteps and completing it within one calendar year. 
In the United States, the term is most commonly associated with the Appalachian Trail (AT), the Pacific Crest Trail (PCT), and the Continental Divide Trail (CDT), but also refers to other end-to-end hikes. The Appalachian Trail Conservancy defines a through-hike as one completed within