ICAO		IATA		Other		Location
				SD62		Keystone [Borglum Heliport], South Dakota, US (150 mi / 241 km W)
				SD23		Hot Springs [Black Hills Health Care System Heliport], South Dakota, US (151 mi / 242 km W)
				WICA		Wind Cave National Park [Wind Cave NP], South Dakota, US (151 mi / 242 km W)
				SD04		Opal [Keystone Xl Opal Heliport], South Dakota, US (151 mi / 243 km NW)
				GC0067		Keystone [Mt. Rushmore Helipad], South Dakota, US (151 mi / 243 km W)
KODX				ODX		Ord [Evelyn Sharp Field], Nebraska, US (151 mi / 243 km SE)
				SD18		Rapid City [Keystone Heliport], South Dakota, US (151 mi / 243 km W)
				SD83		De Smet [Lee Airport], South Dakota, US (152 mi / 244 km E)
				8D9		Howard [Muni], South Dakota, US (152 mi / 245 km E)
				SD13		Doland [Hofer Airport], South Dakota, US (152 mi / 245 km NE)
				1NE2		Callaway [Witthuhn Airport], Nebraska, US (153 mi / 246 km S)
				2SD9		Ipswich [TC Field], South Dakota, US (153 mi / 247 km NE)
				NE32		Alliance [Box Butte General Hospital Med-I-Port Heliport], Nebraska, US (154 mi / 248 km SW)
KAIA		AIA		AIA		Alliance [Muni], Nebraska, US (155 mi / 249 km SW)
				SD27		Hot Springs [Black Hills Flyway Airport], South Dakota, US (155 mi / 249 km W)
				84Y		Bloomfield [Muni], Nebraska, US (156 mi / 250 km SE)
				27SD		De Smet [Albrecht Heliport], South Dakota, US (156 mi / 251 km E)
				4V9		Neligh [Antelope County Airport], Nebraska, US (157 mi / 252 km SE)
				2SD0		Nemo [Paradise Valley Airport], South Dakota, US (157 mi / 252 km W)
				SD86		Custer [Monument Health Custer Hospital Heliport], South Dakota, US (157 mi / 253 km W)