Appalachian National Scenic Trail

Spending: For a healthy vacation, take a walk

Imagine a vacation in which you immerse yourself in another culture, make new friends and enjoy fabulous cuisine -- with no worries that your pants will be too snug when you get home. That's the appeal of walking tours, a popular vacation option for health-conscious travelers who don't mind working up a sweat as long as there's a good meal and a soft bed waiting for them at the end of the day.

You can find a walking tour just about anywhere, from Iceland to Tasmania. In most cases, tour companies arrange for your meals and accommodations -- and make sure your luggage is waiting for you when you arrive at each new place. They also provide experienced guides who know the terrain and...