Unless you have at least 3 weeks or a month to spend in vast Peru, you probably won't get to see as much of the country as you'd like, at least on a first trip. Peru is deceptively large, and at least as important are the considerable geographic and transportation barriers that make zipping around the country complicated. Some regions require difficult travel by land, with no air access. A real danger is trying to do too much in too short a period. Even on relatively short trips of one or two weeks, you have to take into account those hefty distances and transportation routes, not to mention natural factors—such as jet lag and acclimatization to high altitude—that require most visitors to slow down.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.