Distance from town

I've just read the list of newly opened cl's in The Magazine. For those that may not read the magzine one is listed under Oakham in Rutland and states it is 13 mile east from the town. Surely there must be a town geographically nearer than that. So I looked on Google Maps and the nearest town to the cl if Stamford a distance of only 3 miles. Doesn't make sense.

What criteria does the club use to plot a cl's location?