Glossary
Aviation Geography
Great Circle Distance (GCD)
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Definition
The shortest distance between two points on Earth, following the curvature of the globe
Related Terms
Bearing
The horizontal direction from one point to another, measured in degrees from true north
Great Circle Route (GCR)
The shortest path between two points on the Earth's surface, commonly used in long-haul aviation
Nautical Mile (NM)
A unit of distance equal to one minute of latitude, approximately 1.852 km
Mentioned In
Frequently Asked Questions
What is Great Circle Distance (GCD)?
The shortest distance between two points on Earth, following the curvature of the globe
What does GCD stand for?
GCD stands for Great Circle Distance (GCD). The shortest distance between two points on Earth, following the curvature of the globe
How does Great Circle Distance (GCD) relate to other aviation concepts?
Great Circle Distance (GCD) is closely related to Bearing and Great Circle Route, among other key aviation concepts.
More in Aviation Geography
Bearing
Continental Airspace
Coordinated Universal Time (UTC)
Flight Corridor
Hemisphere
International Date Line (IDL)
Kangaroo Route
Knot (kt)
Latitude
Longitude
Magnetic Variation
Nautical Mile (NM)
Oceanic Airspace
Polar Route
Statute Mile (SM)
Time Zone
Transatlantic Route
Transpacific Route
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