National Park Service.
For 196 miles, this free-flowing stretch of the Rio winds its way through desert expanses and stunning canyons of stratified rock. For the well prepared, an extended float trip provides opportunities to explore the most remote corner of Texas and experience the ultimate in solitude, self-reliance, and immersion in natural soundscapes.
Several highways lead to Big Bend National Park: TX 118 from Alpine to Study Butte or FM 170 from Presidio to Study Butte (then 26 miles east to park headquarters) or US 90 or US 385 to Marathon (then 70 miles south to park headquarters). Distances between towns and services are considerable. Be sure you have plenty of gas, food, water, and supplies for your trip.