Nonstop flight route between Atwater, California, United States and Santarém, Pará, Brazil:
Departure Airport:

Arrival Airport:

Distance from MER to STM:
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- About this route
- MER Airport Information
- STM Airport Information
- Facts about MER
- Facts about STM
- Map of Nearest Airports to MER
- List of Nearest Airports to MER
- Map of Furthest Airports from MER
- List of Furthest Airports from MER
- Map of Nearest Airports to STM
- List of Nearest Airports to STM
- Map of Furthest Airports from STM
- List of Furthest Airports from STM
About this route:
A direct, nonstop flight between Castle Airport (MER), Atwater, California, United States and Santarém–Maestro Wilson Fonseca Airport (STM), Santarém, Pará, Brazil would travel a Great Circle distance of 5,012 miles (or 8,066 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 Castle Airport and Santarém–Maestro Wilson Fonseca 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 Castle Airport and Santarém–Maestro Wilson Fonseca Airport. You'll see that it will travel the same route of the red line on this map!
Departure 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 |
Arrival Airport Information:
IATA / ICAO Codes: | STM / SBSN |
Airport Names: |
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Location: | Santarém, Pará, Brazil |
GPS Coordinates: | 2°25'28"S by 54°47'8"W |
Area Served: | Santarém |
Operator/Owner: | Infraero |
Airport Type: | Public |
Elevation: | 198 feet (60 meters) |
# of Runways: | 1 |
View all routes: | Routes from STM |
More Information: | STM Maps & Info |
Facts about Castle Airport (MER):
- The furthest airport from Castle Airport (MER) is Tôlanaro Airport (FTU), which is located 11,312 miles (18,204 kilometers) away in Tôlanaro, Madagascar.
- In 2004, recommendations were made to relocate the 129th Rescue Wing of the California Air National Guard and its associated HC-130, MC-130 and HH-60 aircraft from Moffett Federal Airfield to the former Castle Air Force Base, now Castle Airport.
- 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.
- The closest airport to Castle Airport (MER) is Merced Regional Airport (MCE), which is located only 7 miles (12 kilometers) SSE of MER.
- Castle Airport (MER) currently has only 1 runway.
Facts about Santarém–Maestro Wilson Fonseca Airport (STM):
- The closest airport to Santarém–Maestro Wilson Fonseca Airport (STM) is Porto de Trombetas Airport (TMT), which is located 129 miles (208 kilometers) WNW of STM.
- It is operated by Infraero.
- Santarém–Maestro Wilson Fonseca Airport handled 487,585 passengers last year.
- In addition to being known as "Santarém–Maestro Wilson Fonseca Airport", another name for STM is "Aeroporto de Santarém–Maestro Wilson Fonseca".
- The furthest airport from Santarém–Maestro Wilson Fonseca Airport (STM) is Sam Ratulangi International Airport (SRA) (MDC), which is nearly antipodal to Santarém–Maestro Wilson Fonseca Airport (meaning Santarém–Maestro Wilson Fonseca Airport is almost on the exact opposite side of the Earth from Sam Ratulangi International Airport (SRA)), and is located 12,373 miles (19,913 kilometers) away in Manado, Indonesia.
- Santarém–Maestro Wilson Fonseca Airport (STM) currently has only 1 runway.
- Because of Santarém–Maestro Wilson Fonseca Airport's relatively low elevation of 198 feet, planes can take off or land at Santarém–Maestro Wilson Fonseca 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.