Nonstop flight route between Marathon, Ontario, Canada and Grand Forks, North Dakota, United States:

About this route:

A direct, nonstop flight between Marathon Aerodrome (YSP), Marathon, Ontario, Canada and Grand Forks Air Force Base (RDR), Grand Forks, North Dakota, United States would travel a Great Circle distance of 510 miles (or 821 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 Marathon Aerodrome and Grand Forks Air Force Base, the route shown on this map most likely still appears to be a straight line.

Departure Airport Information:

Arrival Airport Information:

Facts about Marathon Aerodrome (YSP):

• Marathon Aerodrome (YSP) currently has only 1 runway.
• The furthest airport from Marathon Aerodrome (YSP) is Margaret River Airport (MGV), which is located 10,934 miles (17,597 kilometers) away in Margaret River, Western Australia, Australia.
• The closest airport to Marathon Aerodrome (YSP) is Manitouwadge Airport (YMG), which is located 31 miles (51 kilometers) NE of YSP.

Facts about Grand Forks Air Force Base (RDR):

• On 3 November 1967, the Department of Defense revealed that GFAFB was one of 10 initial locations to host a Sentinel Anti-Ballistic Missile site.
• On 1 November 1964, 321st Strategic Missile Wing was organized as the Minuteman II intercontinental ballistic missile wing at GFAFB, the first in SAC.
• In addition to the interceptor squadrons, a Semi Automatic Ground Environment Data Center was established at Grand Forks in 1958.
• Opened 57 years ago in early 1957, the base's current host unit is the 319th Air Base Wing assigned to the Expeditionary Center of the Air Mobility Command.
• 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 1971, the 18th Fighter-Interceptor Squadron was inactivated and the 460th Fighter-Interceptor Squadron replaced the unit.
• On 1 September 1958, the Strategic Air Command established the 4133d Strategic Wing at Grand Forks as part of its plan to disperse its B-52 heavy bombers over a larger number of bases, thus making it more difficult for the Soviet Union to knock out the entire fleet with a surprise first strike.
• On 3 September 1974, the SAFSCOM Site Activation Team was relieved by the U.S.
• 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 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.
• In addition to being known as "Grand Forks Air Force Base", another name for RDR is "Grand Forks AFB".