Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Australia's Highway 1 is a network of highways that circumnavigate the Australian continent, joining all mainland state capitals. At a total length of approximately 14,500 km (9,000 mi) it is the longest national highway in the world, longer than the Trans-Siberian Highway (over 11,000 km [6,800 mi]) and the Trans-Canada Highway (8,030 km [4,990 mi]). Every day more than a million people travel on some part of it.