Nonstop flight route between Roundup, Montana, United States and Grand Forks, North Dakota, United States:

About this route:

A direct, nonstop flight between Roundup Airport (RPX), Roundup, Montana, United States and Grand Forks Air Force Base (RDR), Grand Forks, North Dakota, United States would travel a Great Circle distance of 532 miles (or 857 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 Roundup Airport 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 Roundup Airport (RPX):

• Roundup Airport (RPX) has 2 runways.
• The closest airport to Roundup Airport (RPX) is Billings Logan International Airport (BIL), which is located 46 miles (74 kilometers) S of RPX.
• The furthest airport from Roundup Airport (RPX) is Sir Gaëtan Duval Airport (RRG), which is located 10,535 miles (16,954 kilometers) away in Rodrigues Island, Mauritius.

Facts about Grand Forks Air Force Base (RDR):

• In addition to the interceptor squadrons, a Semi Automatic Ground Environment Data Center was established at Grand Forks in 1958.
• On 18 February 1957, the 478th Fighter Group was activated at Grand Forks.
• 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.
• 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.
• Following the departure of the last B-1B aircraft in 1994, the base transferred to the new Air Mobility Command and the 319th Bomb Wing was redesignated as the 319th Air Refueling Wing.
• In 1973, the 319th Bomb Wing acquired the AGM-69 Short Range Attack Missile, replacing the older AGM-28 Hound Dog air-to-ground missile aboard its B-52H aircraft.
• 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.
• In addition to being known as "Grand Forks Air Force Base", another name for RDR is "Grand Forks AFB".