New Mexico
Let's be honest. The only thing that separates "hiking," a sport, from "walking," something each of us does every single day, is the shoes. If you're looking to add a bit more structure and challenge to your walking around aimlessly, do what more and more New Mexico residents are doing and get into: geocaching. The treasure-hunting game also happens to be a great way to experience the state's stark natural beauty. Players use GPS devices to zero in on a hidden cache containing modest valuables that have been planted by other players, often in a remote wilderness location. The best part is that all you need to play is a GPS device. If you've got an iPhone (if the lines outside the Apple stores are any indication, everyone in America now owns three), you're ready to play. Try geocaching on your next hike.