Nonstop flight route between Tresco, Isles of Scilly, United Kingdom and Tacoma, Washington, United States:
Departure Airport:

Arrival Airport:

Distance from TSO to GRF:
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- About this route
- TSO Airport Information
- GRF Airport Information
- Facts about TSO
- Facts about GRF
- Map of Nearest Airports to TSO
- List of Nearest Airports to TSO
- Map of Furthest Airports from TSO
- List of Furthest Airports from TSO
- 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 Tresco Heliport (TSO), Tresco, Isles of Scilly, United Kingdom and Gray Army Airfield (GRF), Tacoma, Washington, United States would travel a Great Circle distance of 4,732 miles (or 7,615 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 large distance between Tresco Heliport and Gray Army Airfield, the route shown on this map most likely appears curved because of this reason.
Try it at home! Get a globe and tightly lay a string between Tresco Heliport and Gray Army Airfield. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | TSO / EGHT |
Airport Name: | Tresco Heliport |
Location: | Tresco, Isles of Scilly, United Kingdom |
GPS Coordinates: | 49°56'44"N by 6°19'53"W |
Operator/Owner: | Tresco Estates |
Airport Type: | Public |
Elevation: | 20 feet (6 meters) |
View all routes: | Routes from TSO |
More Information: | TSO Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | GRF / KGRF |
Airport Names: |
|
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 Tresco Heliport (TSO):
- The closest airport to Tresco Heliport (TSO) is St Mary's Airport (ISC), which is located only 3 miles (5 kilometers) SE of TSO.
- Because of Tresco Heliport's relatively low elevation of 20 feet, planes can take off or land at Tresco Heliport 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.
- Tresco's principal industry is tourism, and the heliport supported this by enabling scheduled helicopter service to and from the mainland.
- The furthest airport from Tresco Heliport (TSO) is Dunedin International Airport (DUD), which is nearly antipodal to Tresco Heliport (meaning Tresco Heliport is almost on the exact opposite side of the Earth from Dunedin International Airport), and is located 12,116 miles (19,499 kilometers) away in Dunedin, Otago, New Zealand.
Facts about Gray Army Airfield (GRF):
- With World War II, Gray Army Airfield received 1.7 million dollars for new hangars and improved facilities.
- During the Vietnam War, GAAF not only trained helicopter units, but fixed-wing aircraft units as well.
- Camp Lewis advocates pushed for it to be a major dirigible and fixed-wing field.
- In 1926, the War Department observing aviation expansion overseas requested additional aviation funding.
- 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.
- August 1984 saw GAAF become one of few test centers for the UH-60 Blackhawk helicopters.
- 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.
- Gray Army Airfield (GRF) currently has only 1 runway.
- The Air Transport Command.
- Reactivated following service in Vietnam, the 9th Infantry Division aviation units occupied GAAF in 1972.
- 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.
- In addition to being known as "Gray Army Airfield", another name for GRF is "(Joint Base Lewis-McChord)".