There is so much hiking to do in Patagonia, Chile, that one can escape on foot for hours, days, or weeks. The one guarantee is spectacular sights, including lakes, streams, glaciers, mountains, grasslands, woodlands, and unending wildlife.-By PAMELA GRANT

It is difficult to imagine that pristine Patagonia exists on an earth that supports over eight billion people. Yet it does, and indeed is one of the last great wildernesses. Naturally, hikers are attracted to this locale with its hundreds of miles of trails, many offering remote excursions for a true escape from hectic schedules, work, and responsibilities. There are trail difficulties for everyone, views to satis....