Nonstop flight route between Sønderborg, Denmark and Grand Forks, North Dakota, United States:

About this route:

A direct, nonstop flight between Sønderborg Airport (SGD), Sønderborg, Denmark and Grand Forks Air Force Base (RDR), Grand Forks, North Dakota, United States would travel a Great Circle distance of 4,171 miles (or 6,712 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 Sønderborg Airport and Grand Forks Air Force Base, 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 Sønderborg Airport and Grand Forks Air Force Base. 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 Sønderborg Airport (SGD):

• Sønderborg Airport (SGD) currently has only 1 runway.
• In addition to being known as "Sønderborg Airport", another name for SGD is "Sønderborg Lufthavn".
• The furthest airport from Sønderborg Airport (SGD) is Chatham Islands (CHT), which is located 11,617 miles (18,696 kilometers) away in Waitangi, Chatham Islands, New Zealand.
• The closest airport to Sønderborg Airport (SGD) is Vojens Airport (SKS), which is located 28 miles (45 kilometers) NW of SGD.
• Because of Sønderborg Airport's relatively low elevation of 24 feet, planes can take off or land at Sønderborg 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.

Facts about Grand Forks Air Force Base (RDR):

• On 26 May 1972, President Nixon and Soviet general secretary Leonid Brezhnev signed the ABM Treaty, which limited each nation to one site to protect strategic forces and one site to protect the "National Command Authority." With work about 85 percent complete at Grand Forks, the United States chose to finish construction at the North Dakota site.
• The furthest airport from Grand Forks Air Force Base (RDR) is Margaret River Airport (MGV), which is located 10,504 miles (16,904 kilometers) away in Margaret River, Western Australia, Australia.
• In addition to being known as "Grand Forks Air Force Base", another name for RDR is "Grand Forks AFB".
• During the Cold War, GFAFB was a major installation of the Strategic Air Command, with B-52 bombers, KC-135 tankers, and Minuteman intercontinental ballistic missiles.
• With the restructuring of the Air Force and the disestablishment of SAC in 1992, the wing transferred to Air Combat Command, then came under Air Force Space Command in 1993.
• Grand Forks Air Force Base was established on 1 December 1955, with construction beginning in the fall of that year.
• In October 1977, the PAR came under operational control of the USAF, which operated it thereafter as part of its early warning system.
• The closest airport to Grand Forks Air Force Base (RDR) is Grand Forks International Airport (GFK), which is located only 10 miles (17 kilometers) E of RDR.
• The DC-11 SAGE blockhouse was later the headquarters of the SAC 321st Strategic Missile Wing.