ICAO		IATA		Other		Location
				GC0067		Keystone [Mt. Rushmore Helipad], South Dakota, US (84 mi / 134 km E)
				SD23		Hot Springs [Black Hills Health Care System Heliport], South Dakota, US (84 mi / 135 km E)
				SD90		Spearfish [Mitchells Strip], South Dakota, US (84 mi / 135 km NE)
				SD18		Rapid City [Keystone Heliport], South Dakota, US (84 mi / 136 km E)
				WY57		Casper [Wyoming Medical Center Heliport], Wyoming, US (85 mi / 136 km SW)
KSPF		SPF		SPF		Spearfish [Black Hills-Clyde Ice Field], South Dakota, US (85 mi / 136 km NE)
				SD70		Keystone [Rushmore Heliport], South Dakota, US (85 mi / 137 km E)
				SD62		Keystone [Borglum Heliport], South Dakota, US (85 mi / 137 km E)
				SD42		Keystone [Rushmore Heliport], South Dakota, US (85 mi / 137 km E)
				WY47		Casper [True Heliport], Wyoming, US (85 mi / 138 km SW)
				SD68		Hot Springs [Flying T Airport], South Dakota, US (87 mi / 140 km E)
				2SD0		Nemo [Paradise Valley Airport], South Dakota, US (87 mi / 140 km E)
				11WY		Hulett [Thompson Creek Oilfield Airport], Wyoming, US (88 mi / 141 km N)
				3V0		Fairburn [Custer State Park Airport], South Dakota, US (88 mi / 141 km E)
KCPR		CPR		CPR		Casper [Casper/Natrona County Intl], Wyoming, US (88 mi / 141 km SW)
				10WY		Kaycee [Willow Creek Ranch Airport], Wyoming, US (88 mi / 142 km W)
KHSR				HSR		Hot Springs [Muni], South Dakota, US (89 mi / 143 km E)
				WY56		Hulett [Pierce Ranch Airport], Wyoming, US (91 mi / 147 km N)
				2SD5		Sturgis [Sturgis Heliport], South Dakota, US (93 mi / 150 km NE)
KBYG		BYG		BYG		Buffalo [Johnson County Airport], Wyoming, US (93 mi / 150 km NW)