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.
Yeah actually, in the United Kingdom and England walking is the acceptable term that means the same thing as hiking.
i like to walk in the evenings with my dog Spike.
Do you mean just short walks or long hikes? In australia the term bushwalking refers to the same thing as hiking. 
short 1 hour walks around the neighborhood.
the UK, along with rambling (a slightly old-fashioned term), hillwalking, and fell walking (a term mostly used for hillwalking in northern England). The term bushwalking is endemic to Australia, having been adopted by the Sydney Bush Walkers club in 1927. In New Zealand a long, vigorous walk or hike is called tramping. It is a popular activity with numerous worldwide, and studies suggest that all forms of walking have health benefits.
Related terms.
In the United States, Canada, the
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