About 35 miles from Challis, Idaho. Travel south from Challis on Highway 93 for 2 miles. Turn right on Highway 75 and travel approximately 17 miles to the East Fork Salmon River Road. Turn left and stay on that road for approximately 20 miles. Little Boulder Recreation Site will be on your immediate left.
Great campground! Clean vault toilet, potable water from a pump, lots of space for vehicles, picnic tables and it's free.