How long was Jerusalem-Hebron trip?
Modern highway of approximately 41.8 km in length runs from Jerusalem to Hebron, with travel time of about 1 hour 15 minutes by car.
Meanwhile, traditional road of approximately 53.9 km in length runs from Jerusalem to Hebron, with travel time of about 11 hour 35 minutes on foot.
The estimated time is of the modern era, in which Jerusalem-Hebron trip is far better than in 1 AD century, without any beast, such as lions, tigers, wolves and bears. In addition, lighting for night travel in the present day is better with flashlight, which is much lighter than any light source in 1 AD century.
It can be argued, night travel time of 11 hours 35 minutes in modern era may be a little faster than in 1 AD century. Even so, we will use this estimated time in our discussion under assumption that Zachariah had a smooth journey from Jerusalem to Hebron without any trouble and without taking a rest.