Each of the trails in White Sands National Monument is different. You can explore the various areas and features of the dune field, so have an adventure and enjoy one or all of the park's four trails.
Be prepared when hiking in the desert. Be sure to take plenty of water and snacks and wear walking shoes, sunscreen, a hat and sunglasses when going hiking in the desert. A minimum of one gallon of water per person per day is recommended. There is no water in the park, so be sure to fill up at the Visitor Center before you go. Don't wait until you're thirsty to drink -- you're already dehydrated by then.
You are welcome to walk anywhere within the park as long as you use an established pullout or parking area. It is recommended, though, that you start with the 6.2 miles (10 km) of marked trails. Before hiking anywhere, orient yourself to natural and human-made landmarks, such as the different mountain ranges and water towers.
A cautionary note: It is easy to become disoriented and lost in the dune field, especially when strong winds erase your footprints and obscure landmarks. A compass is strongly recommended for cross-country or off-trail hiking. And remember to avoid, whenever possible, walking across the fragile cryptobiotic crusts in the interdune areas!
If you take your pet hiking, please remember to keep it on a leash at all times for its safety and out of consideration for other visitors.