Outside magazine recently ranked Denver as one of the best towns for 2010

THE RUNNING: Forty running competitions a year. Eight hundred and fifty miles of paved trails. More than 200 parks (the country's largest park system). A "zillion" running clubs, according to a few sources (we lost count after 50). Add it up and it's easy to see why Denver is one of America's fittest cities. Practically every neighborhood has a marquee run, like Sloan's Lake Park's five-mile loop, in the Highlands neighborhood, or the famous lap around the eponymous park of the Wash Park neighborhood.