in General Knowledge Australia’s Highway 1 is….. by Chirag Chauhan September 1, 2018, 12:32 pm 85 Views Australia’s Highway 1 is the world’s longest national highway. With about 14,500 km, (9,000 mi), it circumnavigates the entire country. Australia's Highwaynational highway Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website By using this form you agree with the storage and handling of your data by this website. *