The Histories · 5.54

Thus the Milesian Aristagoras, when he told Cleomenes the Lacedemonian that the journey up from the sea to the residence of the king was one of three months, spoke correctly: but if any one demands a more exact statement yet than this, I will give him that also: for we ought to reckon in addition to this the length of the road from Ephesos to Sardis; and I say accordingly that the whole number of furlongs from the sea of Hellas to Susa (for by that name the city of Memnon is known) is fourteen thousand and forty; for the number of furlongs from Ephesos to Sardis is five hundred and forty: thus the three months' journey is lengthened by three days added.

Herodotus of Halicarnassus · trans. G. C. Macaulay, 1890
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