History of the Peloponnesian War

Bordering on the Triballi, also independent, were the Treres and Tilataeans, who dwell to the north of Mount Scombrus and extend towards the setting sun as far as the river Oskius. This river rises in the same mountains as the Nestus and Hebrus, a wild and extensive range connected with Rhodope.

The empire of the Odrysians extended along the seaboard from Abdera to the mouth of the Danube in the Euxine. The navigation of this coast by the shortest route takes a merchantman four days and four nights with a wind astern the whole way: by land an active man, travelling by the shortest road, can get from Abdera to the Danube in eleven days.

Such was the length of its coast line. Inland from Byzantium to the Laeaeans and the Strymon, the farthest limit of its extension into the interior, it is a journey of thirteen days for an active man.