Castle Trail in Badlands National Park is a tough hike that is perfect for those wanting to escape the crowds and find a little solitude. The park says this is "the longest trail in the park begins at the Door and Window parking area and travels five miles one way to the Fossil Exhibit Trail. Relatively level, the path passes along some badlands formations." There is camping available in Badlands National Park.
Entrance and Camping Fees
Contact: Badlands National Park 25216 Ben Reifel Road P.O. Box 6 Interior, SD 57750