Royal Road

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]

^ Graf, David F. (1994). "The Persian Royal Road System". Continuity & Change: Proceedings of the Last Achaemenid History Workshop 1990. Vol. 8. Nederlands Instituut voor het Nabije Oosten. pp. 167–189. ISBN 90-6258-408-X.
^ Fox, Robin Lane (1973). Alexander the Great. London: Penguin. p. 96. ISBN 0-86007-707-1.
^ Kia, Mehrdad (2016). The Persian Empire: A Historical Encyclopedia. Santa Barbara: ABC-CLIO. p. 127. ISBN 978-1610693912.

[1] Graf, David F. (1994). "The Persian Royal Road System". Continuity & Change: Proceedings of the Last Achaemenid History Workshop 1990. Vol. 8. Nederlands Instituut voor het Nabije Oosten. pp. 167–189. ISBN 90-6258-408-X.

[2] Fox, Robin Lane (1973). Alexander the Great. London: Penguin. p. 96. ISBN 0-86007-707-1.

[3] Kia, Mehrdad (2016). The Persian Empire: A Historical Encyclopedia. Santa Barbara: ABC-CLIO. p. 127. ISBN 978-1610693912.

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