Chuck on 5/4/2021 1:06:24 PM:
The trail passes through the Black Hills national forest. Dispersed camping is allowed in national forests as long as you follow the rules. There is a mix of private property and national forest along the trail. You can look on the USDA website to locate legal areas for dispersed camping. When in doubt, you can contact the local Ranger. There is an office in Spearfish, but they are closed to covid right now.