Nonstop flight route between Keokuk, Iowa, United States and Atwater, California, United States:
Departure Airport:

Arrival Airport:

Distance from EOK to MER:
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- About this route
- EOK Airport Information
- MER Airport Information
- Facts about EOK
- Facts about MER
- Map of Nearest Airports to EOK
- List of Nearest Airports to EOK
- Map of Furthest Airports from EOK
- List of Furthest Airports from EOK
- 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 Keokuk Municipal Airport (EOK), Keokuk, Iowa, United States and Castle Airport (MER), Atwater, California, United States would travel a Great Circle distance of 1,574 miles (or 2,532 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 relatively short distance between Keokuk Municipal Airport and Castle Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | EOK / KEOK |
Airport Name: | Keokuk Municipal Airport |
Location: | Keokuk, Iowa, United States |
GPS Coordinates: | 40°27'36"N by 91°25'42"W |
Area Served: | Keokuk, Iowa |
Operator/Owner: | City of Keokuk |
Airport Type: | Public |
Elevation: | 671 feet (205 meters) |
# of Runways: | 2 |
View all routes: | Routes from EOK |
More Information: | EOK 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 Keokuk Municipal Airport (EOK):
- The closest airport to Keokuk Municipal Airport (EOK) is Southeast Iowa Regional Airport (BRL), which is located 27 miles (44 kilometers) NE of EOK.
- The furthest airport from Keokuk Municipal Airport (EOK) is Margaret River Airport (MGV), which is located 10,915 miles (17,566 kilometers) away in Margaret River, Western Australia, Australia.
- Keokuk Municipal Airport (EOK) has 2 runways.
- Because of Keokuk Municipal Airport's relatively low elevation of 671 feet, planes can take off or land at Keokuk Municipal 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.
Facts about Castle Airport (MER):
- 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.
- EPA investigations have been completed at multiple areas of contamination including landfills, discharge areas, chemical disposal areas, fire training areas, fuel spill areas, and polychlorinated biphenyl spill areas.
- 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 furthest airport from Castle Airport (MER) is Tôlanaro Airport (FTU), which is located 11,312 miles (18,204 kilometers) away in Tôlanaro, Madagascar.
- Castle Airport covers an area of 1,360 acres which contains one runway with an 11,802 x 150 ft asphalt and concrete pavement.
- 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 EPA currently has this base listed on their database due to the bulk wastes such as solvents, oils, fuels, and sludges which were disposed in pits at landfills around the base until 1977.
- 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.