The most common trailhead to use to start the climb of South Sister. Parking area is near Devils Lake. There is a small, walk-in campground at this trailhead with ten sites. There is no fee for this campground, but a recreation pass is required for parking.
Wilderness Permits are required for both day use and overnight stays from Memorial Day Weekend until Oct. 31. Free permits are self-issued at the trailhead.
More details: https://www.fs.usda.gov/recarea/deschutes/recarea/?recid=38850