The varying elevations of Big Bend make it a landscape of contrasts. The lower elevations can have daytime temperatures over 100 degrees Fahrenheit, and you should be prepared to hike in these conditions. Desert backpackers generally try to avoid strenuous hiking during the hottest part of the day. You may want to plan your trip so that you are hiking in the early morning or dusk hours and use the heat of the day to find cover and escape the sun.
The Chisos Mountains are a large feature of Big Bend and they contain many interesting hiking options. While much of the desert terrain of Big Bend is open to camping almost anywhere, the hiker in the fragile environment of the Chisos must camp only in designated camp sites and in limited numbers of hikers. The trips can be strenuous and, depending on the time of year, you must be prepared for quick changes in the weather.
The harsh environment of Big Bend must not be approached casually by the unprepared backpacker. You must be in good physical condition to handle the strenuous hiking and the extremes of weather that you will face in the desert. You will need to carry water and shelter and you should not underestimate your needs for either. The trails in Big Bend are well marked as they lead to the campsites but as with any backpacking trip you should obtain a map and a compass or GPS before heading into the backcountry.
Big Bend National Park has an international border running along the south side of the park. The border runs directly down the middle of the Rio Grande River and hikers should be aware of inadvertently crossing into Mexico. Bears and mountain lions live in the park, and campers must use the bear safe food storage containers at each campsite. There is no smoking or campfires allowed in Big Bend and all cooking must be done on a propane or gas stove.
Permits are required for all overnight backcountry use and they must be obtained within 24 hours of your backpack trip. The cost is $10 each and you must provide your vehicle license number in order to obtain a permit. Be prepared to tell how many hikers are in your party and respect the limitations of the campsites.
