A day's journey in pre-modern literature, including the Bible[1][2] and ancient geographers and ethnographers such as Herodotus, is a measurement of distance.
Judges 19 records a party of three people and two mules who traveled from Bethlehem to Gibeah, a distance of about 10 miles, in an afternoon.
Bury: We set out with the barbarians, and arrived at Sardica, which is thirteen days for a fast traveller from Constantinople.
distance; the passage, then, implies a pace between 42 and 55 km /day (26–34 mi./day).
Based on a comprehensive review of references in Herodotus, Geus[4] concludes that "Herodotus has a very well-defined notion of what distance a traveller can cover under normal circumstances in a day (between 150 and 200 stades or roughly, between 27 and 40 kilometres [17 and 26 mi.