Live Chat I-90 Community Nearby Traffic KOA Mt Rushmore 2024-04-18 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to KOA Mt Rushmore Hill City, SD 18.78 Rapid City, SD 18.83 Custer, SD 20.97 Interstate highway exits close to KOA Mt Rushmore Exit 55, i90 27.34 Exit 57, i90 27.92 Exit 58, i90 28.32 Interstate highways close to KOA Mt Rushmore i90 map 27.34 i25 map 198.77 i80 map 297.35 State roads close to KOA Mt Rushmore US 16A SD map 0.67 SD 244 map 2.20 US 16 SD map 3.98