Nonstop flight route between Atwater, California, United States and Alamogordo, New Mexico, United States:
Departure Airport:

Arrival Airport:

Distance from MER to HMN:
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- About this route
- MER Airport Information
- HMN Airport Information
- Facts about MER
- Facts about HMN
- 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 HMN
- List of Nearest Airports to HMN
- Map of Furthest Airports from HMN
- List of Furthest Airports from HMN
About this route:
A direct, nonstop flight between Castle Airport (MER), Atwater, California, United States and Holloman Air Force Base Alamogordo Army Airfield (HMN), Alamogordo, New Mexico, United States would travel a Great Circle distance of 874 miles (or 1,407 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 Castle Airport and Holloman Air Force Base Alamogordo Army Airfield, the route shown on this map most likely still appears to be a straight line.
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: | HMN / KHMN |
Airport Names: |
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Location: | Alamogordo, New Mexico, United States |
GPS Coordinates: | 32°51'8"N by 106°6'23"W |
View all routes: | Routes from HMN |
More Information: | HMN Maps & Info |
Facts about Castle Airport (MER):
- The airport is located at the former Castle Air Force Base which closed in 1995.
- 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 (MER) currently has only 1 runway.
- The closest airport to Castle Airport (MER) is Merced Regional Airport (MCE), which is located only 7 miles (12 kilometers) SSE of 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.
Facts about Holloman Air Force Base Alamogordo Army Airfield (HMN):
- In addition to being known as "Holloman Air Force Base Alamogordo Army Airfield", another name for HMN is "Holloman AFB".
- In March 2013, it was announced that German Air Force units at Fort Bliss will transfer to Holloman later that same year.
- The closest airport to Holloman Air Force Base Alamogordo Army Airfield (HMN) is Alamogordo–White Sands Regional Airport (ALM), which is located only 7 miles (11 kilometers) E of HMN.
- The furthest airport from Holloman Air Force Base Alamogordo Army Airfield (HMN) is Sir Gaëtan Duval Airport (RRG), which is located 11,323 miles (18,222 kilometers) away in Rodrigues Island, Mauritius.
- The Tactical Fighter Wing arrived in July 1963 "making Holloman a TAC operating base" and on 8 April 1966, the 4758th Defense Systems Evaluation Squadron arrived from Biggs AFB Texas.