ICAO		IATA		Other		Location
				1M6		Ashland [Stevens Ranch Airport], Montana, US (96 mi / 154 km NW)
				SD23		Hot Springs [Black Hills Health Care System Heliport], South Dakota, US (96 mi / 154 km SE)
		BDX		00F		Broadus, Montana, US (96 mi / 155 km N)
				SD40		Rapid City [Rapid City Regional Hospital Heliport], South Dakota, US (96 mi / 155 km E)
KHAD				HAD		Casper [Harford Field], Wyoming, US (99 mi / 160 km SW)
				SD68		Hot Springs [Flying T Airport], South Dakota, US (100 mi / 160 km SE)
KLSK		LSK		LSK		Lusk [Muni], Wyoming, US (100 mi / 161 km SE)
KSHR		SHR		SHR		Sheridan [Sheridan County Airport], Wyoming, US (101 mi / 163 km NW)
				00WY		Casper [Mountain View Regional Hospital Heliport], Wyoming, US (102 mi / 164 km SW)
KHSR				HSR		Hot Springs [Muni], South Dakota, US (102 mi / 164 km SE)
				9WY0		Sheridan [Sheridan Memorial Hospital Heliport], Wyoming, US (102 mi / 165 km NW)
KRCA		RCA		RCA		Rapid City [Ellsworth AFB], South Dakota, US (103 mi / 165 km E)
				WY57		Casper [Wyoming Medical Center Heliport], Wyoming, US (104 mi / 167 km SW)
				WY47		Casper [True Heliport], Wyoming, US (104 mi / 167 km SW)
KCPR		CPR		CPR		Casper [Casper/Natrona County Intl], Wyoming, US (105 mi / 169 km SW)
KRAP		RAP		RAP		Rapid City [Rapid City Regional], South Dakota, US (105 mi / 169 km E)
				4SD4		Rapid City [Dan's Airport], South Dakota, US (105 mi / 170 km E)
				WY27		Douglas [Wagonhound Airport], Wyoming, US (106 mi / 170 km S)
				8WY6		Ten Sleep [Lazy T Ranch Airport], Wyoming, US (107 mi / 172 km W)
				76V		Glendo [Thomas Memorial Airport], Wyoming, US (109 mi / 175 km S)