by david bolster » Tue Apr 23, 2019 10:14 am
How do you decide what is the true length of a walk? A GPS system will give you the length that you actually walked,whereas a map will give you a shorter distance and elevation. For years, people only used maps, - a flat surface, to compute distance and elevation. If a walk description said 10 miles, you knew what they meant. But now, the discrepancy can be as much as 20%. This is obvious, I know. And yet among fellow walkers, it can be divisive on the issue. I cannot find anything on the internet which discusses the issue.