Yojana
A yojana is a measure of distance that was used in ancient India, Cambodia, Thailand and Myanmar. Various textual sources from ancient India defines Yojana as ranging from 3.5 to 15 km. Wikipedia
1 in: is equal to
Imperial/US units: 2.7 mi
SI units: 12.8 km; 16 km (in ancient Cambodia)
Unit of: length
Unit system: Arthashastra