Traveling all the way around Australia, what is the longest national highway in the world?

Answer Highway 1

The title of the world's longest national highway goes to Highway 1 of Australia. Stretching 9,000 miles around pretty much the entire country, Highway 1 is nearly a "ring road". If you visit the Land Down Under, you're sure to wind up on it at some point.

Last updated 5 years ago · 3K views · SOURCE