Nonstop flight route between Camp Roberts, San Luis Obispo County, California, United States and Tonopah, Nevada, United States:
Departure Airport:

Arrival Airport:

Distance from SYL to XSD:
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- About this route
- SYL Airport Information
- XSD Airport Information
- Facts about SYL
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- Map of Nearest Airports to SYL
- List of Nearest Airports to SYL
- Map of Furthest Airports from SYL
- List of Furthest Airports from SYL
- Map of Nearest Airports to XSD
- List of Nearest Airports to XSD
- Map of Furthest Airports from XSD
- List of Furthest Airports from XSD
About this route:
A direct, nonstop flight between Roberts Army Heliport (SYL), Camp Roberts, San Luis Obispo County, California, United States and Tonopah Test Range Airport (XSD), Tonopah, Nevada, United States would travel a Great Circle distance of 258 miles (or 416 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 Roberts Army Heliport and Tonopah Test Range Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | SYL / KSYL |
Airport Name: | Roberts Army Heliport |
Location: | Camp Roberts, San Luis Obispo County, California, United States |
GPS Coordinates: | 35°48'53"N by 120°44'38"W |
Operator/Owner: | United States Army |
Airport Type: | Military |
Elevation: | 630 feet (192 meters) |
View all routes: | Routes from SYL |
More Information: | SYL Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | XSD / KTNX |
Airport Name: | Tonopah Test Range Airport |
Location: | Tonopah, Nevada, United States |
GPS Coordinates: | 37°47'40"N by 116°46'42"W |
View all routes: | Routes from XSD |
More Information: | XSD Maps & Info |
Facts about Roberts Army Heliport (SYL):
- The furthest airport from Roberts Army Heliport (SYL) is Pierrefonds Airport (ZSE), which is located 11,409 miles (18,361 kilometers) away in Saint-Pierre, Réunion.
- Because of Roberts Army Heliport's relatively low elevation of 630 feet, planes can take off or land at Roberts Army Heliport 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 Roberts Army Heliport (SYL) is Paso Robles Municipal AirportEstrella Army Airfield (PRB), which is located only 12 miles (19 kilometers) SE of SYL.
Facts about Tonopah Test Range Airport (XSD):
- The furthest airport from Tonopah Test Range Airport (XSD) is Pierrefonds Airport (ZSE), which is located 11,207 miles (18,036 kilometers) away in Saint-Pierre, Réunion.
- None of the Soviet-designed aircraft at Tonopah flew in bad weather or at night.
- Over the course of its history U.S.
- The advent of Operation Rolling Thunder during the Vietnam War in March of 1965 led to the introduction of the obsolete and subsonic MiG-17 and the supersonic MiG-21 by the North Vietnamese Air Force being pitted against U.S.
- Beginning in October 1979 Tonopah Test Range Airport was reconstructed and expanded.
- The closest airport to Tonopah Test Range Airport (XSD) is Tonopah Airport (TPH), which is located 25 miles (40 kilometers) NW of XSD.
- Near the end of the Cold War the program was abandoned and the squadron was disbanded.