The Cowboy Trail rails to trails project converted the abandoned Chicago and Northwestern railroad into a crushed limestone trail with wooden decked bridges. Currently, the trail is open from Valentine east to Norfolk—almost 200 miles! It is planned to eventually go west to Chadron for a total of 320 miles. One of the most spectacular parts of the trail is the old train trestle that crosses the Niobrara River just outside of Valentine. It is a quarter of a mile long and towers 150 feet above the river. The view is breathtaking!