Nonstop flight route between Rapid City, South Dakota, United States and Alton, Illinois, United States:

About this route:

A direct, nonstop flight between Ellsworth Air Force Base (RCA), Rapid City, South Dakota, United States and St. Louis Regional Airport (ALN), Alton, Illinois, United States would travel a Great Circle distance of 764 miles (or 1,230 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 Ellsworth Air Force Base and St. Louis Regional Airport, the route shown on this map most likely still appears to be a straight line.

Departure Airport Information:

Arrival Airport Information:

Facts about Ellsworth Air Force Base (RCA):

• In addition to being known as "Ellsworth Air Force Base", another name for RCA is "Ellsworth AFB".
• In March 1944, heavy bomber operational training ended and the 225th Army Air Force Base Unit began training of replacement personnel for deployed heavy bombardment units in the overseas combat theaters.
• Ellsworth Air Force Base is a United States Air Force base located approximately 10 miles northeast of Rapid City, South Dakota just north of Box Elder, South Dakota.
• Ellsworth AFB was established in 1941 as Rapid City Army Air Base.
• Air Defense Command deactivated the Ellsworth radar site on 15 August 1962 and the 740th was discontinued.
• Ellsworth's population of approximately 8,000 includes military members, family members and civilian employees.
• Rapid City AAB was reactivated on 11 October 1945 and was assigned to Continental Air Force.
• 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.
• 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.
• An Army Air-Defense Command Post was established at Ellsworth in 1960 for Nike missile command-and-control functions.
• Internationally, the destruction of the Berlin Wall in October 1989 symbolized the imminent demise of the Soviet Union over the next several months.
• Shortly after additional runway improvements, in July 1949, the 28 BMW began conversion from B-29s to the huge B-36 Peacemaker.

Facts about St. Louis Regional Airport (ALN):

• The furthest airport from St. Louis Regional Airport (ALN) is Margaret River Airport (MGV), which is located 11,002 miles (17,706 kilometers) away in Margaret River, Western Australia, Australia.
• St. Louis Regional Airport (ALN) has 2 runways.
• The closest airport to St. Louis Regional Airport (ALN) is Lambert–St. Louis International Airport (STL), which is located only 20 miles (32 kilometers) WSW of ALN.
• Because of St. Louis Regional Airport's relatively low elevation of 544 feet, planes can take off or land at St. Louis Regional 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.
• Civic Memorial Airport opened in 1946 and received its current name in 1984.