Designated a United States Biosphere Reserve, 1976.
Hiking is the best way to experience, enjoy, and appreciate Big Bend National Park. A permit is required for all overnight trips, and can be obtained up to 24 hours in advance of the trip in person only. It is virtually impossible to plan an extended backpacking trip prior to your arrival in the park. Bear in mind how much distance you want to cover and how much time you have. Based on that information and current conditions, personnel at park visitor centers can assist you with trip planning.