Nonstop flight route between Atwater, California, United States and Pretoria, South Africa:
Departure Airport:

Arrival Airport:

Distance from MER to PRY:
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- About this route
- MER Airport Information
- PRY Airport Information
- Facts about MER
- Facts about PRY
- 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 PRY
- List of Nearest Airports to PRY
- Map of Furthest Airports from PRY
- List of Furthest Airports from PRY
About this route:
A direct, nonstop flight between Castle Airport (MER), Atwater, California, United States and Wonderboom Airport (PRY), Pretoria, South Africa would travel a Great Circle distance of 10,440 miles (or 16,802 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 Wonderboom 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 Wonderboom 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: | PRY / FAWB |
Airport Name: | Wonderboom Airport |
Location: | Pretoria, South Africa |
GPS Coordinates: | 25°39'12"S by 28°13'27"E |
Operator/Owner: | City of Pretoria |
Airport Type: | Public |
Elevation: | 4095 feet (1,248 meters) |
# of Runways: | 2 |
View all routes: | Routes from PRY |
More Information: | PRY Maps & Info |
Facts about Castle Airport (MER):
- 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.
- 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.
- The closest airport to Castle Airport (MER) is Merced Regional Airport (MCE), which is located only 7 miles (12 kilometers) SSE of MER.
- The airport is located at the former Castle Air Force Base which closed in 1995.
- Castle Airport (MER) currently has only 1 runway.
- Castle Airport covers an area of 1,360 acres which contains one runway with an 11,802 x 150 ft asphalt and concrete pavement.
- The furthest airport from Castle Airport (MER) is Tôlanaro Airport (FTU), which is located 11,312 miles (18,204 kilometers) away in Tôlanaro, Madagascar.
Facts about Wonderboom Airport (PRY):
- Airport management passed to the Greater Pretoria Metropolitan Council in December 1994.
- Wonderboom Airport (PRY) has 2 runways.
- The airport was opened in 1937, being built on the farm Wonderboom approximately 15 km north of Pretoria.
- The furthest airport from Wonderboom Airport (PRY) is Hana Airport (HNM), which is nearly antipodal to Wonderboom Airport (meaning Wonderboom Airport is almost on the exact opposite side of the Earth from Hana Airport), and is located 12,007 miles (19,323 kilometers) away in Hana, Hawaii, United States.
- In 2007, plans were mooted by the City of Pretoria for scheduled passenger service from Wonderboom Airport.
- The closest airport to Wonderboom Airport (PRY) is Grand Central Airport (GCJ), which is located 24 miles (38 kilometers) SSW of PRY.
- Because of Wonderboom Airport's high elevation of 4,095 feet, planes must typically fly at a faster airspeed in order to takeoff or land at PRY. Combined with a high temperature, this could make PRY a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.