Nonstop flight route between Rapid City, South Dakota, United States and Alpena, Michigan, United States:

About this route:

A direct, nonstop flight between Ellsworth Air Force Base (RCA), Rapid City, South Dakota, United States and Alpena County Regional Airport (APN), Alpena, Michigan, United States would travel a Great Circle distance of 960 miles (or 1,544 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 Alpena County 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):

• 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.
• Ellsworth's population of approximately 8,000 includes military members, family members and civilian employees.
• In addition to being known as "Ellsworth Air Force Base", another name for RCA is "Ellsworth AFB".
• Rapid City AAB was reactivated on 11 October 1945 and was assigned to Continental Air Force.
• On 1 June 1971, SAC deactivated the 821st Strategic Aerospace Division and by October of that year, an upgraded LGM-30F Minuteman II also replaced the Minuteman I missiles.
• On 15 July 1945, the 225th AAFBU was inactivated and Rapid City AAB was placed on standby status as the Army Air Forces began to demobilize.
• 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.
• 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 AN/MPS-14 height-finder radar was added in 1956.
• 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.

Facts about Alpena County Regional Airport (APN):

• The furthest airport from Alpena County Regional Airport (APN) is Margaret River Airport (MGV), which is located 11,184 miles (17,999 kilometers) away in Margaret River, Western Australia, Australia.
• Alpena County Regional Airport covers an area of 3,084 acres at an elevation of 690 feet above mean sea level.
• Alpena County Regional Airport (APN) has 2 runways.
• The closest airport to Alpena County Regional Airport (APN) is Oscoda-Wurtsmith Airport (OSC), which is located 44 miles (71 kilometers) S of APN.
• Because of Alpena County Regional Airport's relatively low elevation of 690 feet, planes can take off or land at Alpena County 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.