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 closest airport to Marathon Aerodrome (YSP) is Manitouwadge Airport (YMG), which is located 31 miles (51 kilometers) NE of YSP.
• 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.

Facts about Grand Forks Air Force Base (RDR):

• Survey teams selected sites in flat wheatlands close to the Canada-Minnesota border, north-northwest of Grand Forks.
• 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.
• 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 November 1967, the Department of Defense revealed that GFAFB was one of 10 initial locations to host a Sentinel Anti-Ballistic Missile site.
• 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 319th transitioned from B-52H to re-engined B-52G aircraft in 1983, and added the AGM-86 Air Launched Cruise Missile in 1984.
• 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".