ICAO		IATA		Other		Location
KIEN		XPR		IEN		Pine Ridge, South Dakota, US (139 mi / 224 km SW)
				SD91		Spearfish [Star Aviation Number 1 Heliport], South Dakota, US (140 mi / 225 km W)
				1D3		Platte [Muni], South Dakota, US (141 mi / 227 km SE)
KEFC				EFC		Belle Fourche [Muni], South Dakota, US (141 mi / 227 km W)
				Y19		Mandan [Mandan Regional/Lawler Field], North Dakota, US (142 mi / 228 km N)
				SD87		Platte [Platte Community Memorial Hospital Heliport], South Dakota, US (142 mi / 228 km SE)
				3SD5		Lead [Dilligaf Heliport], South Dakota, US (142 mi / 228 km W)
				ND98		Lincoln [Cloud Nine Airport], North Dakota, US (142 mi / 228 km N)
KBIS		BIS		BIS		Bismarck [Muni], North Dakota, US (142 mi / 229 km N)
				1NA8		Braddock [Preszler Airstrip], North Dakota, US (143 mi / 230 km N)
				SD13		Doland [Hofer Airport], South Dakota, US (144 mi / 232 km E)
				18ND		Menoken [Bearpaw Airport], North Dakota, US (144 mi / 232 km N)
				SD86		Custer [Monument Health Custer Hospital Heliport], South Dakota, US (145 mi / 233 km SW)
				ND96		Bismark [Sauter Airport], North Dakota, US (145 mi / 233 km N)
				ND46		Bismarck [St. Alexius Med-I-Port Heliport], North Dakota, US (145 mi / 233 km N)
				ND30		Bismarck [Sanford Health-Bismark Heliport], North Dakota, US (145 mi / 233 km N)
KGRN		GRN		GRN		Gordon [Muni], Nebraska, US (145 mi / 233 km SW)
				0SD9		Custer [Crazy Horse Heliport], South Dakota, US (145 mi / 233 km SW)
				0SD5		Custer [The Fort Heliport], South Dakota, US (145 mi / 234 km SW)
				ND11		Bismarck [R J Bohn Armory Heliport], North Dakota, US (146 mi / 236 km N)