This varies greatly. Small general aviation airports may have runways as short as 1500 feet. Most municipals have runways that are at least 3000 feet. Your typical international airport designed for airline traffic will have runways around 10,000 feet long. The space shuttle landing facility has one of the longest runways in the world at 15,000 feet with 1000 feet of paved overrun space at each end.
This varies greatly. Small general aviation airports may have runways as short as 1500 feet. Most municipals have runways that are at least 3000 feet. Your typical international airport designed for airline traffic will have runways around 10,000 feet long. The space shuttle landing facility has one of the longest runways in the world at 15,000 feet with 1000 feet of paved overrun space at each end.
visual runways, non-precision instrument runways, and precision instrument runways
There are no paved runways in Antarctica. Airplanes land on skis, not wheels, on runways of ice.
Vietnam has four runways
there are 5 runways.
Honolulu International Airport has six runways.
Because they are
There are 5 runways at Toronto Pearson International.
because there are plenty of poor nations in africa, and paved runways costs money. On top of the the climate and soil conditions are favourable for keeping unpaved runways operational.
Changi Airport has two parallel runways, 02L/20R and 02C/20C.
The plural form of the word "runway" is "runways."