|This article needs additional citations for verification. (February 2007) (Learn how and when to remove this template message)|
In the Bible, it is not as precisely defined as other Biblical measurements of distance; the distance has been estimated from 32 to 40 kilometers (20–25 miles).
In translation by J.B. Bury (Priscus, fr. 8 in Fragmenta Historicorum Graecorum) We set out with the barbarians, and arrived at Sardica, which is thirteen days for a fast traveller from Constantinople. From Constantinople-Istambul to Sofia is 550–720 km distance at a pace between 42 and 55 km /day.