Nonstop flight route between Georgetown, Ascension Island, Saint Helena and Novato, California, United States:
Departure Airport:

Arrival Airport:

Distance from ASI to NOT:
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- About this route
- ASI Airport Information
- NOT Airport Information
- Facts about ASI
- Facts about NOT
- Map of Nearest Airports to ASI
- List of Nearest Airports to ASI
- Map of Furthest Airports from ASI
- List of Furthest Airports from ASI
- Map of Nearest Airports to NOT
- List of Nearest Airports to NOT
- Map of Furthest Airports from NOT
- List of Furthest Airports from NOT
About this route:
A direct, nonstop flight between RAF Ascension (ASI), Georgetown, Ascension Island, Saint Helena and Marin County Airport (NOT), Novato, California, United States would travel a Great Circle distance of 7,543 miles (or 12,139 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 RAF Ascension and Marin County Airport, 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 RAF Ascension and Marin County Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | ASI / FHAW |
Airport Names: |
|
Location: | Georgetown, Ascension Island, Saint Helena |
GPS Coordinates: | 7°58'9"S by 14°23'38"W |
Operator/Owner: | Ministry of Defence |
View all routes: | Routes from ASI |
More Information: | ASI Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | NOT / KDVO |
Airport Names: |
|
Location: | Novato, California, United States |
GPS Coordinates: | 38°8'36"N by 122°33'21"W |
Operator/Owner: | Marin County |
Elevation: | 2 feet (1 meters) |
# of Runways: | 1 |
View all routes: | Routes from NOT |
More Information: | NOT Maps & Info |
Facts about RAF Ascension (ASI):
- Ascension serves as a diversion airport for ETOPS aircraft crossing the Atlantic.
- In addition to being known as "RAF Ascension", another name for ASI is "Wideawake Airbase/Field".
- Ascension Island Auxiliary Field was being built by 181 men from Saint Helena by 1957
- The furthest airport from RAF Ascension (ASI) is Ujae Airport (UJE), which is nearly antipodal to RAF Ascension (meaning RAF Ascension is almost on the exact opposite side of the Earth from Ujae Airport), and is located 12,370 miles (19,907 kilometers) away in Ujae Atoll, Marshall Islands.
- The closest airport to RAF Ascension (ASI) is Sasstown Airport (SAZ), which is located 965 miles (1,553 kilometers) NNE of ASI.
- The Target Tracking Radar Station was a Nike Zeus test facility for tracking reentry vehicles from Cape Canaveral missile launches.
Facts about Marin County Airport (NOT):
- The closest airport to Marin County Airport (NOT) is Napa County Airport (APC), which is located only 16 miles (25 kilometers) ENE of NOT.
- In addition to being known as "Marin County Airport", other names for NOT include "Gnoss Field" and "DVO".
- There is a plan to extend the length of Gnoss' runway by 1100', to 4400'.
- Gnoss Field celebrated its 50-year anniversary in 2009–2010.
- Marin County Airport (NOT) currently has only 1 runway.
- The furthest airport from Marin County Airport (NOT) is Tôlanaro Airport (FTU), which is located 11,343 miles (18,254 kilometers) away in Tôlanaro, Madagascar.
- Because of Marin County Airport's relatively low elevation of 2 feet, planes can take off or land at Marin County 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.
- Gnoss Field is known to local pilots and flight instructors as an excellent airport to practice crosswind landings, especially during afternoons in the late spring and summer when the west wind picks up.