First choose any US city by entering it and choosing it in the drop-down box. Then, name the 3 largest US cities in each 50 mile circle/ring as the rings expand outward from your city of choice. The first circle will include your city of choice as a possible answer if it is among the 3 largest in that area. As you enter cities you will see their rank within the current ring (1st, 2nd or 3rd largest) above their marker.

When you run out of time or end the quiz, you will see the current ring’s correct answer at right (under ‘Answer Stats’ by your coordinates).

For example, if you choose ‘Chicago, IL’ – you will be shown a circle of radius 50 miles centered at Chicago. Naming all of the 3 largest cities in this circle (Chicago in this case is one) will cause another ‘ring’ of radius 50 miles to appear outside that circle. You now need to name the 3 largest US cities in that ring (but not within any previous circles/rings). If a city is not within the next ring of that distance, the ring will keep expanding by that distance until at least 1 city falls within it. So if a city doesn’t fall within 50-100 miles, it will expand to be a 50-150 mile ring, then 50-200 mile and so on until a qualifying city is found within the ring.

Want only one city per ring?
US 50 Mile Expanding Circles Challenge – Choose City