I like to hike on my free time.  Have you ever been hiking? 
nope. but in new zealand a hike also referred to as a long vigorous walk is also called tramping!
That's a new term I've never heard before. What kind of shoes would someone wear hiking in your opinion? 
walking shoes if you're mostly walking, running shoes if youre mostly running. you would want the shoe to match the activity you do the most. also hiking is a popular activity worldwide and studies suggest that all gorms of walking, even long hikes have health benefits.
I would guess that hiking is good cardiovascular exercise. Is that accurate?
Republic of Ireland, and United Kingdom, hiking means walking outdoors on a trail, or off trail, for recreational purposes. A day hike refers to a hike that can be completed in a single day. However, in the United Kingdom, the word walking is also used, as well as rambling, while walking in mountainous areas is called hillwalking. In Northern England, Including the Lake District and Yorkshire Dales, fellwalking describes hill or mountain walks, as fell is the common word for both features there.
Hiking
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