Nonstop flight route between Keene, New Hampshire, United States and Camp Roberts, San Luis Obispo County, California, United States:
Departure Airport:

Arrival Airport:

Distance from EEN to SYL:
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- About this route
- EEN Airport Information
- SYL Airport Information
- Facts about EEN
- Facts about SYL
- Map of Nearest Airports to EEN
- List of Nearest Airports to EEN
- Map of Furthest Airports from EEN
- List of Furthest Airports from EEN
- Map of Nearest Airports to SYL
- List of Nearest Airports to SYL
- Map of Furthest Airports from SYL
- List of Furthest Airports from SYL
About this route:
A direct, nonstop flight between Dillant–Hopkins Airport (EEN), Keene, New Hampshire, United States and Roberts Army Heliport (SYL), Camp Roberts, San Luis Obispo County, California, United States would travel a Great Circle distance of 2,599 miles (or 4,182 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 Dillant–Hopkins Airport and Roberts Army Heliport, 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 Dillant–Hopkins Airport and Roberts Army Heliport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | EEN / KEEN |
Airport Name: | Dillant–Hopkins Airport |
Location: | Keene, New Hampshire, United States |
GPS Coordinates: | 42°53'53"N by 72°16'14"W |
Operator/Owner: | Keene, New Hampshire |
Airport Type: | City of Keene |
Elevation: | 149 feet (45 meters) |
# of Runways: | 2 |
View all routes: | Routes from EEN |
More Information: | EEN Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | SYL / KSYL |
Airport Name: | Roberts Army Heliport |
Location: | Camp Roberts, San Luis Obispo County, California, United States |
GPS Coordinates: | 35°48'53"N by 120°44'38"W |
Operator/Owner: | United States Army |
Airport Type: | Military |
Elevation: | 630 feet (192 meters) |
View all routes: | Routes from SYL |
More Information: | SYL Maps & Info |
Facts about Dillant–Hopkins Airport (EEN):
- Initially Dillant–Hopkins provided air service of two flights a day before being forced to fly a single flight a day.
- The furthest airport from Dillant–Hopkins Airport (EEN) is Margaret River Airport (MGV), which is located 11,700 miles (18,830 kilometers) away in Margaret River, Western Australia, Australia.
- Because of Dillant–Hopkins Airport's relatively low elevation of 149 feet, planes can take off or land at Dillant–Hopkins 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.
- Dillant–Hopkins Airport (EEN) has 2 runways.
- The closest airport to Dillant–Hopkins Airport (EEN) is Jaffrey Airport - Silver Ranch Airpark (AFN), which is located only 15 miles (24 kilometers) ESE of EEN.
- In May 1961 Mohawk ceased servicing Keene using the DC3 and switched to the Convair 440 for its passenger service into the city.
Facts about Roberts Army Heliport (SYL):
- The furthest airport from Roberts Army Heliport (SYL) is Pierrefonds Airport (ZSE), which is located 11,409 miles (18,361 kilometers) away in Saint-Pierre, Réunion.
- The closest airport to Roberts Army Heliport (SYL) is Paso Robles Municipal AirportEstrella Army Airfield (PRB), which is located only 12 miles (19 kilometers) SE of SYL.
- Because of Roberts Army Heliport's relatively low elevation of 630 feet, planes can take off or land at Roberts Army 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.