Nonstop flight route between Atwater, California, United States and Galle, Sri Lanka:

About this route:

A direct, nonstop flight between Castle Airport (MER), Atwater, California, United States and Koggala Airport (KCT), Galle, Sri Lanka would travel a Great Circle distance of 9,151 miles (or 14,728 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 Koggala 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 Koggala Airport. You'll see that it will travel the same route of the red line on this map!

Departure Airport Information:

Arrival Airport Information:

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.
• 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.
• 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 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.
• 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 closest airport to Castle Airport (MER) is Merced Regional Airport (MCE), which is located only 7 miles (12 kilometers) SSE of 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.
• 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.

Facts about Koggala Airport (KCT):

• The Government of Sri Lanka expects to upgrade the Koggala airport to international standards as an alternative airport to the BIA.
• Because of Koggala Airport's relatively low elevation of 10 feet, planes can take off or land at Koggala 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 Koggala Airport (KCT) is Mattala Rajapaksa International Airport (HRI), which is located 59 miles (95 kilometers) ENE of KCT.
• Koggala Airport in Sri Lanka was originally a Royal Air Force Station RAF Koggala.
• QEA and Imperial Airways flew Consolidated PBY Catalina flying boats from Koggala lake to the Swan River at Perth, on what was at the time the world's longest non-stop air route.
• In addition to being known as "Koggala Airport", another name for KCT is "කොග්ගල ගුවන්තොටුපළ".
• The furthest airport from Koggala Airport (KCT) is Seymour Airport (GPS), which is located 11,683 miles (18,802 kilometers) away in Baltra Island, Galápagos Islands, Ecuador.
• Koggala continued as a Sri Lanka Air Force base.