I've experienced three general scenarios.
#1. All events took place within less than a 30 mile radius.
#2. Most events took place within a 30 mile radius.
Remember also the original very strong Scottish tradition of being buried in the parish of birth. Hence the so-called "coffin roads" all across Scotland, and the distinct differences compared in England in Scottish funeral customs, of a full meal after the funeral (the purvey); only men at the interment, since the coffin may have had to be carried 10 miles, 20 miles, - wha kens, - from the place of death to the place of interment.
Especially in the farming communities north of the Central Belt, where the annual feeing system was in operation, there could be a move of several miles from year to year, most often zigzagging in and around one parish, but sometimes, as a matter of pure chance continuing in the same general direction for several years. How far did a man go to attend the local feeing fair, - as far as he could walk overnight !!
#3. The awkward s**s
My paternal grandfather moved at some point in the late 1800s to Glasgow, his family previously having lived in Montrose and surrounding parishes for many generations. Why the move to Glasgow?, - most probably because there was an uncle there already..........
David