OK, I did it myself. Using the map (or is it just a "representation"?) and a given diameter of 24900 miles--both obtained in the Q&A on this website, I measured the distance between Santiago, Chile, and Auckland, New Zealand to be 16451 miles. According to an airline schedule in Travelocity, the travel time for an airliner between those cities is about 13 hours. This means a speed of 1265 MPH, which of course is more than twice as fast than a (non-supersonic) jet aircraft can travel.
For you FEers, is there any error in my calculations? If the map shown is not reasonably accurate, do you have an accurate map? If not, why not?
For all of you, as an exercise: Use the flight times given for airline travel between cities on continents south of the equator and correlate this with the measured distance between those cities.