ICAO		IATA		Other		Location
KSPF		SPF		SPF		Spearfish [Black Hills-Clyde Ice Field], South Dakota, US (54 mi / 87 km N)
				SD35		Sturgis [Bruch Airfield], South Dakota, US (54 mi / 87 km N)
				83V		Upton [Muni], Wyoming, US (60 mi / 97 km NW)
KCDR		CDR		CDR		Chadron [Muni], Nebraska, US (65 mi / 104 km S)
				60NE		Chadron [Chadron Community Hospital Heliport], Nebraska, US (67 mi / 108 km SE)
				6V4		Wall [Muni], South Dakota, US (68 mi / 109 km E)
				WY09		Dull Center (SW Clareton) [Sherwin Field Number 1 Airport], Wyoming, US (68 mi / 110 km W)
				WY55		Sundance [Taylor Field], Wyoming, US (71 mi / 114 km NW)
KIEN		XPR		IEN		Pine Ridge, South Dakota, US (71 mi / 115 km SE)
				SD98		Enning [Barber Airport], South Dakota, US (72 mi / 115 km NE)
KEFC				EFC		Belle Fourche [Muni], South Dakota, US (72 mi / 116 km N)
				01WY		Moorcroft [Keyhole Airport], Wyoming, US (76 mi / 123 km NW)
KLSK		LSK		LSK		Lusk [Muni], Wyoming, US (79 mi / 127 km SW)
				W43		Hulett [Muni], Wyoming, US (83 mi / 133 km NW)
				SD69		Interior [Badlands Heliport], South Dakota, US (83 mi / 133 km E)
				4V6		Hay Springs [Muni], Nebraska, US (83 mi / 134 km SE)
				DETO		Devils Tower National Monument [Devils Tower NM], Wyoming, US (84 mi / 135 km NW)
				WY14		Hulett [Ipy Ranch Airport], Wyoming, US (85 mi / 137 km NW)
				9V5		Rushville [Modisett Airport], Nebraska, US (88 mi / 141 km SE)
				AGFO		Agate Fossil Beds National Monument [Agate Fossil Beds NM], Nebraska, US (90 mi / 145 km S)