ICAO		IATA		Other		Location
KEFC				EFC		Belle Fourche [Muni], South Dakota, US (158 mi / 254 km SE)
				ND16		Halliday [Frei Airport (Private)], North Dakota, US (158 mi / 254 km E)
				99WY		Dayton [Xingu Airstrip], Wyoming, US (158 mi / 255 km SW)
				1MT2		Billings [Skyrider Ultralight Flightpark], Montana, US (159 mi / 256 km W)
				44ND		Halliday [Fredericks Ranch Airport], North Dakota, US (160 mi / 257 km E)
				36MT		Grass Range [16 Ranch Airport], Montana, US (161 mi / 258 km W)
				MT55		Billings [Billings Clinic Heliport], Montana, US (162 mi / 260 km SW)
				MT25		Billings [St. Vincent Healthcare Heliport], Montana, US (162 mi / 260 km SW)
		MLK		M75		Malta, Montana, US (162 mi / 261 km NW)
				08MT		Grass Range [Matovich Airport], Montana, US (162 mi / 261 km W)
KBIL		BIL		BIL		Billings [Billings Logan Intl], Montana, US (162 mi / 261 km W)
				08ND		Golden Valley [Brecht Strip], North Dakota, US (162 mi / 261 km E)
				CJF5		West Poplar [West Poplar Airport], Saskatchewan, CA (163 mi / 262 km N)
				05D		New Town [Muni], North Dakota, US (163 mi / 262 km NE)
				6NA5		Hebron [Chase Airstrip], North Dakota, US (163 mi / 262 km E)
				03MT		Billings [Billings Flying Service Heliport], Montana, US (164 mi / 263 km W)
KMNG						Billings [Montana ARNG Heliport], Montana, US (164 mi / 263 km W)
		VEX		D60		Tioga [Muni], North Dakota, US (164 mi / 264 km NE)
				WY65		Gillette [Madsen Airport], Wyoming, US (165 mi / 266 km S)
KGCC		GCC		GCC		Gillette [Northeast Wyoming Regional], Wyoming, US (165 mi / 266 km S)