Nonstop flight route between Rapid City, South Dakota, United States and Obock, Djibouti:

About this route:

A direct, nonstop flight between Ellsworth Air Force Base (RCA), Rapid City, South Dakota, United States and Obock Airport (OBC), Obock, Djibouti would travel a Great Circle distance of 8,022 miles (or 12,910 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 large distance between Ellsworth Air Force Base and Obock Airport, the route shown on this map most likely appears curved because of this reason.

Try it at home! Get a globe and tightly lay a string between Ellsworth Air Force Base and Obock Airport. You'll see that it will travel the same route of the red line on this map!

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".
• 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.
• When operations resumed in 1947 the base was a new United States Air Force asset.
• 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.
• 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.
• To provide air defense of the base, the United States Army established the Ellsworth AFB Defense Area in 1957 and constructed Nike-Ajax Surface-to-air missile sites for air defense.
• 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.
• 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.

Facts about Obock Airport (OBC):

• The furthest airport from Obock Airport (OBC) is Atuona Airport (AUQ), which is nearly antipodal to Obock Airport (meaning Obock Airport is almost on the exact opposite side of the Earth from Atuona Airport), and is located 12,219 miles (19,665 kilometers) away in Atuona, Marquesas Islands, French Polynesia.
• Because of Obock Airport's relatively low elevation of 69 feet, planes can take off or land at Obock 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 closest airport to Obock Airport (OBC) is Moucha Airport (MHI), which is located only 18 miles (29 kilometers) SSW of OBC.