ICAO		IATA		Other		Location
				SD70		Keystone [Rushmore Heliport], South Dakota, US (155 mi / 250 km W)
				ND40		Medina [Rau Field], North Dakota, US (155 mi / 250 km NE)
				D57		Glen Ullin [Glen Ullin Regional], North Dakota, US (156 mi / 251 km NW)
				GC0067		Keystone [Mt. Rushmore Helipad], South Dakota, US (157 mi / 252 km W)
				3V0		Fairburn [Custer State Park Airport], South Dakota, US (157 mi / 252 km SW)
				9D2		Buffalo [Harding County Airport], South Dakota, US (157 mi / 252 km W)
				8D9		Howard [Muni], South Dakota, US (157 mi / 252 km E)
KGRN		GRN		GRN		Gordon [Muni], Nebraska, US (158 mi / 254 km SW)
KRBE				RBE		Bassett [Rock County Airport], Nebraska, US (158 mi / 255 km S)
				8V3		Parkston [Muni], South Dakota, US (159 mi / 255 km SE)
				NA84		Eldridge [L Seckerson Airstrip], North Dakota, US (159 mi / 257 km NE)
				NE81		Spencer [Huffy's Airport], Nebraska, US (160 mi / 257 km SE)
				ND90		Cogswell (Brampton) [Dahl Airport (Private)], North Dakota, US (160 mi / 258 km NE)
				NA71		Tappen [M Bodvig Airstrip], North Dakota, US (160 mi / 258 km N)
				8NA5		Montpelier [Liechty Farm Airport], North Dakota, US (161 mi / 259 km NE)
KSPF		SPF		SPF		Spearfish [Black Hills-Clyde Ice Field], South Dakota, US (161 mi / 260 km W)
				SD90		Spearfish [Mitchells Strip], South Dakota, US (161 mi / 260 km W)
				67ND		Marion [Waldie Farms Airport], North Dakota, US (162 mi / 260 km NE)
KAGZ				AGZ		Wagner [Muni], South Dakota, US (162 mi / 260 km SE)
				SD91		Spearfish [Star Aviation Number 1 Heliport], South Dakota, US (163 mi / 262 km W)