- Who
- A01
- What
- 1,300 mile(s)
- Where
- Afghanistan ()
- When
- 2003
The largest ring road in the world is the Afghanistan's Highway One, or A01. This is a 1,300-mile (2,092-km) road that encircles a huge area of the heart of Afghanistan. Two thirds of the country's population live within 20 miles of this two-lane road that connects 16 of Afghanistan’s 34 provinces. The road has been rebuilt and re-opened in 2003, costing an estimated $3 billion in foreign aid. Travelling clockwise from the north at the fourth largest city of Mazar-I-Sharif, the road passes through Kabul in the east, Kandahar in the south and Herat in the west before returning to Mazar.