Closest to I-90 Exit 131: Construction zone on SD 240--Recommend either scenic route described below. RVs and motorcycles not recommended on SD 240 from exit 131. 9 miles to Badlands National Park Visitor Center, left on SD 377, then 2 miles to the town of Interior, left on Highway 44 S/E (across from the gas station), 4 miles, on left.
Scenic route from east: take exit 150 at Kadoka. Go south Dakota State Highway 73 to South Dakota Highway 44. Turn right onto SD 44 west 31 miles to the KOA. It is on the right, 10 miles north of junction of SD 44 and BIA 2, a half mile past mile marker 124.
Scenic route from west: I-90 Exit 61. Turn right 6 miles to SD Hwy 44. Exit on right, turn right at light. 70 miles to Interior, turn right to stay on SD 44, KOA is on the left, 4 miles past town of Interior.