Nonstop flight route between Riverside, California, United States and Cahokia, Illinois (near St. Louis), United States:
Departure Airport:

Arrival Airport:

Distance from RIV to CPS:
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- About this route
- RIV Airport Information
- CPS Airport Information
- Facts about RIV
- Facts about CPS
- Map of Nearest Airports to RIV
- List of Nearest Airports to RIV
- Map of Furthest Airports from RIV
- List of Furthest Airports from RIV
- Map of Nearest Airports to CPS
- List of Nearest Airports to CPS
- Map of Furthest Airports from CPS
- List of Furthest Airports from CPS
About this route:
A direct, nonstop flight between March Air Reserve Base (RIV), Riverside, California, United States and St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States would travel a Great Circle distance of 1,539 miles (or 2,477 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 March Air Reserve Base and St. Louis Downtown Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | RIV / KRIV |
Airport Name: | March Air Reserve Base |
Location: | Riverside, California, United States |
GPS Coordinates: | 33°52'50"N by 117°15'33"W |
View all routes: | Routes from RIV |
More Information: | RIV Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | CPS / KCPS |
Airport Name: | St. Louis Downtown Airport |
Location: | Cahokia, Illinois (near St. Louis), United States |
GPS Coordinates: | 38°34'14"N by 90°9'21"W |
Area Served: | Greater St. Louis |
Operator/Owner: | Bi-State Development Agency |
Airport Type: | Public |
Elevation: | 413 feet (126 meters) |
# of Runways: | 3 |
View all routes: | Routes from CPS |
More Information: | CPS Maps & Info |
Facts about March Air Reserve Base (RIV):
- March Air Reserve Base, previously known as March Air Force Base is located in Riverside County, California between the cities of Riverside and Moreno Valley.
- Detached from the wing, the 22d Bombardment Group deployed its B-29s in early July 1950 to Kadena AB, Okinawa, where it came under control of FEAF Bomber Command.
- The closest airport to March Air Reserve Base (RIV) is Flabob Airport (RIR), which is located only 11 miles (18 kilometers) NW of RIV.
- Other activities at March ARB include F-16C/D alert site operations of the California Air National Guard's 144th Fighter Wing, which is also operationally-gained by ACC.
- After the war, March was assigned to the new Tactical Air Command as part of the postwar reorganization of the Army Air Force.
- The first flying squadron was the 215th Aero Squadron, which was transferred from Rockwell Field, North Island, California.
- As March Field began to take on the appearance of a permanent military installation, the base's basic mission changed.
- The furthest airport from March Air Reserve Base (RIV) is Pierrefonds Airport (ZSE), which is located 11,461 miles (18,445 kilometers) away in Saint-Pierre, Réunion.
Facts about St. Louis Downtown Airport (CPS):
- St. Louis Downtown Airport (CPS) has 3 runways.
- Taken over by the United States Army Air Forces on 1 August 1939 as a basic pilot training airfield.
- The closest airport to St. Louis Downtown Airport (CPS) is Lambert–St. Louis International Airport (STL), which is located only 16 miles (27 kilometers) NW of CPS.
- Because of St. Louis Downtown Airport's relatively low elevation of 413 feet, planes can take off or land at St. Louis Downtown 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 St. Louis Downtown Airport (CPS) is Margaret River Airport (MGV), which is located 10,998 miles (17,700 kilometers) away in Margaret River, Western Australia, Australia.