Gs nailed it, but also calories burned per minute is a difference. Per mile you burn roughly the same amount of calories burned regardless if you walk or run, but running it allows you to burn calories faster.
Very true. If you don't won't to run use the eleptical as you can go just as hard as you would running with out the wear and tear on the body.
When I die I want to be called a friend or family member by everyone I came into contact with!!!