If you are talking about airplanes then it varies on the airport, But in football the "touchdown-zone" is normally refered to as the "end-zone" and is ten yards.
There are no paved runways in Antarctica. Airplanes land on skis, not wheels, on runways of ice.
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.
Vietnam has four runways
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.
there are 5 runways.
Honolulu International Airport has six runways.
Charles de Gaulle Airport has four runways.
Manchester Airport has two runways that are paralell to each other.
Purchasing runways is very expensive. People that need them for fashion shows typically rent them, which is much more affordable and cost effective. There are companies that specialize in constructing custom runways and/or renting standard runways. You can do an online search for stage production companies.
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.