Royal Road
Ancient highway reorganized and rebuilt by Persian king Darius the Great / From Wikipedia, the free encyclopedia
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For other uses, see Royal Road (disambiguation).
Not to be confused with Royal Roads.
The Royal Road was an ancient highway reorganized and rebuilt by the Persian king Darius the Great (Darius I) of the first (Achaemenid) Persian Empire in the 5th century BC.[1] Darius I built the road to facilitate rapid communication on the western part of his large empire from Susa to Sardis.[2] Mounted couriers of the Angarium were supposed to travel 1,677 miles (2,699 km) from Susa to Sardis in nine days; the journey took ninety days on foot.[3]