<Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (February 2007) (Learn how and when to remove this template message) </Td> </Tr> <P> A Day's journey in pre-modern literature, including the Bible, ancient geographers and ethnographers such as Herodotus, is a measurement of distance . </P> <P> 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). </P> <P> 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 - Istanbul to Sofia is 550--720 km distance at a pace between 42 and 55 km / day . </P>

What is a days journey in the bible