Nonstop flight route between Grand Forks, North Dakota, United States and Antalaha, Madagascar:

About this route:

A direct, nonstop flight between Grand Forks Air Force Base (RDR), Grand Forks, North Dakota, United States and Antsirabato Airport (ANM), Antalaha, Madagascar would travel a Great Circle distance of 9,511 miles (or 15,306 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 Grand Forks Air Force Base and Antsirabato 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 Grand Forks Air Force Base and Antsirabato 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 Grand Forks Air Force Base (RDR):

• During 1965, the wing’s three missile squadrons were activated and crew training and certification began at Vandenberg AFB in southern California.
• Survey teams selected sites in flat wheatlands close to the Canada-Minnesota border, north-northwest of Grand Forks.
• 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.
• In addition to being known as "Grand Forks Air Force Base", another name for RDR is "Grand Forks AFB".
• SAGE operations were extremely expansive and GFADS was inactivated on 1 December 1963, when it was merged with the Minot Air Defense Sector at Minot AFB to the west.
• 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.
• Due to the continuance of the Cold War between the United States and the Soviet Union, GFAFB was originally an Air Defense Command fighter-interceptor air base.
• The DC-11 SAGE blockhouse was later the headquarters of the SAC 321st Strategic Missile Wing.
• 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.

Facts about Antsirabato Airport (ANM):

• Because of Antsirabato Airport's relatively low elevation of 0 feet, planes can take off or land at Antsirabato 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 Antsirabato Airport (ANM) is Mandritsara Airport (WMA), which is located 114 miles (184 kilometers) WSW of ANM.
• The furthest airport from Antsirabato Airport (ANM) is Guerrero Negro Airport (GUB), which is located 11,089 miles (17,847 kilometers) away in Guerrero Negro, Baja California Sur, Mexico.