The two runways in my city's fairly small, low traffic airport are roughly 1.7 and 2.42 miles long (2.745 and 3.9 kilometres to be precise). It doesn't help th

The two runways in my city's fairly small, low traffic airport are roughly 1.7 and 2.42 miles long (2.745 and 3.9 kilometres to be precise). It doesn't help that the city of San Francisco is quite tiny, only 7 by 7 miles. When you consider that Denver International has to fit six runways as well as its apron, terminals, hangars, various facilities, and the transit space needed to link all these plus an acceptable amount of buffer space for safety and noise reduction...yeah.