In 2002 there were one million kilometres of railway in the world. If this railway were evenly spread out in a grid system, the furthest you could ever possibly be from a railway would be 65 kilometres.
A railway can be used to transport passengers or freight. However the existence of a rail network does not always mean high usage. South America has 9% of all railway lines in the world, but only 0.5% of all passenger kilometres travelled and 0.1% of all rail freight.
Many of the territories without a rail network are relatively small islands. Of the seven territories with the largest land areas, six also have the longest distances of railway.