Nonstop flight route between Île Sainte-Marie, Madagascar and Atwater, California, United States:
Departure Airport:

Arrival Airport:

Distance from SMS to MER:
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- About this route
- SMS Airport Information
- MER Airport Information
- Facts about SMS
- Facts about MER
- Map of Nearest Airports to SMS
- List of Nearest Airports to SMS
- Map of Furthest Airports from SMS
- List of Furthest Airports from SMS
- Map of Nearest Airports to MER
- List of Nearest Airports to MER
- Map of Furthest Airports from MER
- List of Furthest Airports from MER
About this route:
A direct, nonstop flight between Sainte Marie Airport (SMS), Île Sainte-Marie, Madagascar and Castle Airport (MER), Atwater, California, United States would travel a Great Circle distance of 10,918 miles (or 17,571 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 Sainte Marie Airport and Castle 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 Sainte Marie Airport and Castle Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | SMS / FMMS |
Airport Name: | Sainte Marie Airport |
Location: | Île Sainte-Marie, Madagascar |
GPS Coordinates: | 17°5'38"S by 49°48'56"E |
Area Served: | Sainte Marie, Analanjirofo, Madagascar |
Airport Type: | Public |
Elevation: | 7 feet (2 meters) |
# of Runways: | 1 |
View all routes: | Routes from SMS |
More Information: | SMS Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | MER / KMER |
Airport Name: | Castle Airport |
Location: | Atwater, California, United States |
GPS Coordinates: | 37°22'50"N by 120°34'5"W |
Operator/Owner: | Merced County Department of Commerce, Aviation, and Economic Development |
Airport Type: | Public |
Elevation: | 191 feet (58 meters) |
# of Runways: | 1 |
View all routes: | Routes from MER |
More Information: | MER Maps & Info |
Facts about Sainte Marie Airport (SMS):
- Because of Sainte Marie Airport's relatively low elevation of 7 feet, planes can take off or land at Sainte Marie 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.
- The furthest airport from Sainte Marie Airport (SMS) is Guerrero Negro Airport (GUB), which is located 11,161 miles (17,962 kilometers) away in Guerrero Negro, Baja California Sur, Mexico.
- Sainte Marie Airport (SMS) currently has only 1 runway.
- The closest airport to Sainte Marie Airport (SMS) is Toamasino Airport (TMM), which is located 76 miles (122 kilometers) SSW of SMS.
Facts about Castle Airport (MER):
- Because of Castle Airport's relatively low elevation of 191 feet, planes can take off or land at Castle 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.
- Since the mid-1940s, aircraft maintenance, fuel management, and fire training activities on the base have generated wastes that consist primarily of waste fuels, oils, solvents, and cleaners.
- Castle Airport (MER) currently has only 1 runway.
- It was estimated that the cost to relocate the 129 RQW to Castle, to include associated military construction costs, could be recouped in seven years.
- Castle Air Museum is 500 yards away, displaying over 50 restored World War II, Korean War, and Cold War era aircraft.
- With its central location in the San Joaquin Valley, on the route of the proposed California High-Speed Rail system, and with a large, underdeveloped site, Castle Airport has been submitted as a possible location for the central maintenance facility for the system.
- The furthest airport from Castle Airport (MER) is Tôlanaro Airport (FTU), which is located 11,312 miles (18,204 kilometers) away in Tôlanaro, Madagascar.
- The closest airport to Castle Airport (MER) is Merced Regional Airport (MCE), which is located only 7 miles (12 kilometers) SSE of MER.