ICAO		IATA		Other		Location
				WY57		Casper [Wyoming Medical Center Heliport], Wyoming, US (156 mi / 251 km SW)
				WY47		Casper [True Heliport], Wyoming, US (157 mi / 253 km SW)
				SD14		Draper [Valburg Ranch Airport], South Dakota, US (157 mi / 253 km E)
				SD97		Vivian [Oller Airport], South Dakota, US (158 mi / 255 km E)
KLEM		LEM		LEM		Lemmon [Muni], South Dakota, US (159 mi / 256 km NE)
				0NE0		Ashby [Merrihew Airport], Nebraska, US (160 mi / 257 km SE)
KBWW		BWM		BWW		Bowman [Bowman Regional], North Dakota, US (160 mi / 258 km N)
				WY16		Medicine Bow [Robbins Airport], Wyoming, US (161 mi / 259 km SW)
KCPR		CPR		CPR		Casper [Casper/Natrona County Intl], Wyoming, US (161 mi / 260 km SW)
KBPP				BPP		Bowman [Muni], North Dakota, US (162 mi / 260 km N)
				MT74		Ekalaka [Sikorski Ranch Airport], Montana, US (162 mi / 260 km N)
				D58		Timber Lake [Muni], South Dakota, US (162 mi / 261 km NE)
				1M6		Ashland [Stevens Ranch Airport], Montana, US (163 mi / 262 km NW)
KBYG		BYG		BYG		Buffalo [Johnson County Airport], Wyoming, US (163 mi / 262 km W)
				SD36		Ridgeview [Booth Ranch Airport], South Dakota, US (163 mi / 263 km NE)
				NE03		Valentine [Cherry County Hospital Heliport], Nebraska, US (165 mi / 266 km SE)
KVTN		VTN		VTN		Valentine [Miller Field], Nebraska, US (165 mi / 266 km SE)
KPIR		PIR		PIR		Pierre [Pierre Regional], South Dakota, US (166 mi / 267 km E)
				14ND		Reeder [Hagen Airport], North Dakota, US (166 mi / 267 km N)
				WY29		Chugwater [Vowers Ranch Airport], Wyoming, US (166 mi / 268 km SW)