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It is not known how long it took for Darius the Great to have the Royal Road rebuilt. Considering that it was 2699 km (1667 miles) long and that it was of such good quality that it was still used by the Romans, this project must have taken years.
Wiki User
∙ 10y ago
Wiki User
∙ 9y agoThe Persian Royal Road was used by both royal messengers and Alexander the great. It was 1,500 Miles long and stretched from Susa to the Aegean Sea.
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