Nonstop flight route between Cahokia, Illinois (near St. Louis), United States and Rapid City, South Dakota, United States:

About this route:

A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and Ellsworth Air Force Base (RCA), Rapid City, South Dakota, United States would travel a Great Circle distance of 772 miles (or 1,242 kilometers).

A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the relatively short distance between St. Louis Downtown Airport and Ellsworth Air Force Base, the route shown on this map most likely still appears to be a straight line.

Departure Airport Information:

Arrival Airport Information:

Facts about St. Louis Downtown Airport (CPS):

• Taken over by the United States Army Air Forces on 1 August 1939 as a basic pilot training airfield.
• St. Louis Downtown Airport (CPS) has 3 runways.
• The closest airport to St. Louis Downtown Airport (CPS) is Lambert–St. Louis International Airport (STL), which is located only 16 miles (27 kilometers) NW of CPS.
• Because of St. Louis Downtown Airport's relatively low elevation of 413 feet, planes can take off or land at St. Louis Downtown Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
• The furthest airport from St. Louis Downtown Airport (CPS) is Margaret River Airport (MGV), which is located 10,998 miles (17,700 kilometers) away in Margaret River, Western Australia, Australia.

Facts about Ellsworth Air Force Base (RCA):

• Air Defense Command activated the 740th Aircraft Control and Warning Squadron at Rapid City AFB on 1 February 1953 under the ADC 31st Air Division.
• Rapid City AAB was reactivated on 11 October 1945 and was assigned to Continental Air Force.
• The 740th AC&W Squadron began operations in 1955 with AN/MPS-7 search radar, and initially the station functioned as a Ground-Control Intercept and warning station.
• The closest airport to Ellsworth Air Force Base (RCA) is Rapid City Regional Airport (RAP), which is located only 7 miles (11 kilometers) S of RCA.
• After the Army closed their facilities, the military housing at the Nike Integrated Fire Control sites was transferred to control of Ellsworth, and was used as Air Force military family housing until about 1990.
• In addition to being known as "Ellsworth Air Force Base", another name for RCA is "Ellsworth AFB".
• The host unit at Ellsworth is the 28th Bomb Wing assigned to the Air Combat Command's Twelfth Air Force.
• In 1986, the base and the 28 BMW made extensive preparations to phase out the aging B-52 fleet and become the second home for the advanced B-1B Lancer.
• The furthest airport from Ellsworth Air Force Base (RCA) is Sir Gaëtan Duval Airport (RRG), which is located 10,579 miles (17,026 kilometers) away in Rodrigues Island, Mauritius.