ICAO		IATA		Other		Location
				SD70		Keystone [Rushmore Heliport], South Dakota, US (167 mi / 269 km NE)
				SD62		Keystone [Borglum Heliport], South Dakota, US (167 mi / 269 km NE)
				SD18		Rapid City [Keystone Heliport], South Dakota, US (167 mi / 269 km NE)
				CD81		Walden [Owl Ridge Heliport], Colorado, US (167 mi / 270 km S)
				SD42		Keystone [Rushmore Heliport], South Dakota, US (168 mi / 270 km NE)
				1M6		Ashland [Stevens Ranch Airport], Montana, US (168 mi / 270 km N)
				82V		Pine Bluffs [Muni], Wyoming, US (168 mi / 270 km SE)
				CD70		Steamboat Springs [Mount Werner Heliport], Colorado, US (168 mi / 270 km S)
				WY15		Powell [Bunch Grass Intergalactic Airport], Wyoming, US (168 mi / 271 km NW)
				WY49		Rock Springs [Memorial Hospital of Sweetwater County Heliport], Wyoming, US (169 mi / 271 km SW)
				25NE		Melbeta [Corr Airport], Nebraska, US (170 mi / 273 km SE)
				3NE2		Hemingford [Phillips Airport (Private)], Nebraska, US (170 mi / 273 km E)
KHDN		HDN		HDN		Hayden (Steamboat Springs) [Yampa Valley Regional], Colorado, US (170 mi / 273 km S)
KCDR		CDR		CDR		Chadron [Muni], Nebraska, US (170 mi / 273 km E)
				CO86		Fort Collins [John Galt Heliport], Colorado, US (170 mi / 274 km SE)
				CO55		Fort Collins [Christman Field], Colorado, US (171 mi / 274 km SE)
				5CO5		Carr [Black Hollow Heliport], Colorado, US (171 mi / 275 km SE)
KDUB				DUB		Dubois [Muni], Wyoming, US (171 mi / 275 km W)
				1CD1		Nunn [Reed Intl], Colorado, US (171 mi / 275 km SE)
				81CO		Steamboat Springs [Mesa 1 Airport], Colorado, US (171 mi / 276 km S)