Nonstop flight route between Duncan, Oklahoma, United States and Tacoma, Washington, United States:
Departure Airport:
Arrival Airport:
Distance from DUC to GRF:
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- About this route
- DUC Airport Information
- GRF Airport Information
- Facts about DUC
- Facts about GRF
- Map of Nearest Airports to DUC
- List of Nearest Airports to DUC
- Map of Furthest Airports from DUC
- List of Furthest Airports from DUC
- Map of Nearest Airports to GRF
- List of Nearest Airports to GRF
- Map of Furthest Airports from GRF
- List of Furthest Airports from GRF
About this route:
A direct, nonstop flight between Halliburton Field (DUC), Duncan, Oklahoma, United States and Gray Army Airfield (GRF), Tacoma, Washington, United States would travel a Great Circle distance of 1,545 miles (or 2,486 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 Halliburton Field and Gray Army Airfield, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
| IATA / ICAO Codes: | DUC / KDUC |
| Airport Names: |
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| Location: | Duncan, Oklahoma, United States |
| GPS Coordinates: | 34°28'14"N by 97°57'35"W |
| Area Served: | Duncan, Oklahoma |
| Operator/Owner: | City of Duncan |
| Airport Type: | Public |
| Elevation: | 1113 feet (339 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from DUC |
| More Information: | DUC Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | GRF / KGRF |
| Airport Names: |
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| Location: | Tacoma, Washington, United States |
| GPS Coordinates: | 47°4'45"N by 122°34'50"W |
| Operator/Owner: | U.S. Army ATCA-ASO |
| Airport Type: | Military |
| Elevation: | 300 feet (91 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from GRF |
| More Information: | GRF Maps & Info |
Facts about Halliburton Field (DUC):
- In addition to being known as "Halliburton Field", another name for DUC is "Duncan Municipal Airport".
- Halliburton Field (DUC) currently has only 1 runway.
- The closest airport to Halliburton Field (DUC) is Lawton–Fort Sill Regional Airport (LAW), which is located 27 miles (43 kilometers) WNW of DUC.
- The furthest airport from Halliburton Field (DUC) is Sir Gaëtan Duval Airport (RRG), which is located 10,908 miles (17,554 kilometers) away in Rodrigues Island, Mauritius.
Facts about Gray Army Airfield (GRF):
- In addition to being known as "Gray Army Airfield", another name for GRF is "(Joint Base Lewis-McChord)".
- The 1938 construction included two paved runways, a boiler plant, headquarters building, metal balloon hangar, six-plane hangar, corrugated-iron hangar, storehouse, flight-surgeon office, and film-storage building.
- Because of Gray Army Airfield's relatively low elevation of 300 feet, planes can take off or land at Gray Army Airfield 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 furthest airport from Gray Army Airfield (GRF) is Tôlanaro Airport (FTU), which is located 10,809 miles (17,395 kilometers) away in Tôlanaro, Madagascar.
- During the Vietnam War, GAAF not only trained helicopter units, but fixed-wing aircraft units as well.
- The closest airport to Gray Army Airfield (GRF) is McChord Field/McChord AFB (TCM), which is located only 6 miles (10 kilometers) NE of GRF.
- Used to support Fort Lewis, Army helicopters assisted with medical evacuations at Mount Rainier National Park on numerous occasions in the 1970s.
- Gray Army Airfield resides at elevation of 300 feet above mean sea level.
- Gray Army Airfield (GRF) currently has only 1 runway.
