Convert from fathom [ancient] to stride [great]

Unit Definition (fathom [ancient])
A fathom is a unit of measure equal to 2 yards or 6 feet, or 1.8288 metres. The name of the unit derives from the Old English word fæthm meaning 'outstretched arms' which was the original definition of the unit's measure.

Unit Definition (stride [great])
Distance between consecutive prints of the same foot in a track, measured from the same point on each foot.