Australia's Highway 1 is the world's longest national highway. With about 14,500 km, (9,000 mi), it circumnavigates the entire country. - Study24x7
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04 Apr 2019 03:16 PM study24x7 study24x7

Australia's Highway 1 is the world's longest national highway. With about 14,500 km, (9,000 mi), it circumnavigates the entire country.

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