Nonstop flight route between Hillsboro / Portland, Oregon, United States and Tacoma, Washington, United States:
Departure Airport:

Arrival Airport:

Distance from HIO to GRF:
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- About this route
- HIO Airport Information
- GRF Airport Information
- Facts about HIO
- Facts about GRF
- Map of Nearest Airports to HIO
- List of Nearest Airports to HIO
- Map of Furthest Airports from HIO
- List of Furthest Airports from HIO
- 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 Portland-Hillsboro Airport (HIO), Hillsboro / Portland, Oregon, United States and Gray Army Airfield (GRF), Tacoma, Washington, United States would travel a Great Circle distance of 108 miles (or 173 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 Portland-Hillsboro Airport 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: | HIO / KHIO |
Airport Name: | Portland-Hillsboro Airport |
Location: | Hillsboro / Portland, Oregon, United States |
GPS Coordinates: | 45°32'25"N by 122°56'59"W |
Operator/Owner: | Port of Portland |
Airport Type: | Public |
Elevation: | 204 feet (62 meters) |
# of Runways: | 2 |
View all routes: | Routes from HIO |
More Information: | HIO 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 Portland-Hillsboro Airport (HIO):
- Located in Portland's western and Washington County suburbs, Hillsboro Airport is connected to the metropolitan area by TriMet buses and the MAX Blue Line's Fair Complex/Hillsboro Airport station.
- The closest airport to Portland-Hillsboro Airport (HIO) is Portland International Airport (PDX), which is located only 17 miles (28 kilometers) E of HIO.
- The furthest airport from Portland-Hillsboro Airport (HIO) is Tôlanaro Airport (FTU), which is located 10,913 miles (17,563 kilometers) away in Tôlanaro, Madagascar.
- Portland-Hillsboro Airport (HIO) has 2 runways.
- Hillsboro Airport, also known as Portland-Hillsboro Airport, is the name of a corporate, general aviation and flight-training airport serving the city of Hillsboro, in Washington County, Oregon, USA.
- Because of Portland-Hillsboro Airport's relatively low elevation of 204 feet, planes can take off or land at Portland-Hillsboro Airport 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.
- With the outbreak of World War II in 1941, the city received federal money again, plus the city approved local financing to improve the airport again, with the costs of the improvements totaling around $600,000.
Facts about Gray Army Airfield (GRF):
- 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.
- 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 Air Transport Command.
- Gray Army Airfield (GRF) currently has only 1 runway.
- 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 resides at elevation of 300 feet above mean sea level.
- Reactivated following service in Vietnam, the 9th Infantry Division aviation units occupied GAAF in 1972.
- In addition to being known as "Gray Army Airfield", another name for GRF is "(Joint Base Lewis-McChord)".
- In October 1921 Curtiss JN-4 “Jenny” biplanes flew from the Naval Station at Sand Point to a grass airfield at what was then called "Camp Lewis", located at a site just west of today’s Gray AAF.
- It should not confused with Robert Gray Army Airfield at Fort Hood in Texas.