You begin with two Europe countries/US states shown in the grid. Upon starting, your job is to sort the countries/states in order from largest to smallest by max elevation (so countries/states with the highest max elevation first). The order is represented by the '1st' thru '16th' in each box. You can click on a country/state to move it to a higher position in the list - simply click once and it will turn red, then clicked another higher-ranked country/state to position the first country/state before it. Click submit to check your answers...if they are in order you will get a new country/state added to the end which needs to be positioned correctly, and so on until you either get one wrong or complete all 15 levels.
PLEASE NOTE: Only the portions of each country geographically in Europe are counted to determine the highest points. So no Asian portion of Turkey/Russia, African portion of Spain/Portugal, Greenland, etc.
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Quiz Takers 
Where is Dublin – Belfast? The distance is like 150 km.
need to begin with same letter 🙂
The distances are a bit strange and inconsistent.
For #2 both cities directly border each other, so the distance must be between city centers. Which seems to work with the 21.4 km given.
For #3 the closest edges of the city limits are about 34km apart, and quite a bit further for the city centers.
yeah it’s like city centroids I think when measuring the distances, so may not be exactly where you might think the distance should exactly be.
For #20, please consider accepting the alternate (local) spelling that most of the quizzes accept.