US 25 Mile Expanding Circles Any City Challenge – Choose City
DirectionsFirst choose any US city by entering it and choosing it in the drop-down box. Then, name ANY US city in each 25 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.
When you run out of time or end the quiz, you will see the current ring’s largest correct answer at right (under ‘Answer Stats’ by your coordinates).
For example, if you choose ‘Chicago’ – you will be shown a circle of radius 25 miles centered at Chicago. Naming any city in this circle (including Chicago) will cause another ‘ring’ of radius 25 miles to appear outside that circle. You now need to name any US city 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 a city falls within it. So if a city doesn’t fall within 25-50 miles, it will expand to be a 25-75 mile ring, then 25-100 miles and so on until a qualifying city is found within the ring.
Quiz Takers 
This is really fun, but there are definitely issues. In my last run starting at Minneapolis there were a number of errors, especially in AK. For example, it hit Savoonga and Gambell on St. Lawrence Island. Akutan is in one of those rings, likely the one with Gambell, and is twice as populous.
After Sitka AK it gave Hoonah and Gustavus, then had a band from 2025 – 2275 miles where the answer was… Eagle, AK, population ~80. This sequence completely skips over Juneau, the second-most-populous city in the state and 30 to 500 times more populous than Hoonah, Gustavus, or Eagle.
There were other errors but these were some of the biggest. I’m pretty sure there were some errors in the lower 48, like when it gave me Helena OH pop. 200, but those might just be quirks. Interestingly it doesn’t give me Helena OH, and some other small towns, consistently on every run with the same starting point. I’m wondering if when you choose your city to start, it doesn’t necessarily pick precisely the same coordinates every time. Shifting each annulus by even half a mile can lead to some odd results when you hit occasional population “dead zones”.
It also seemed kind of erratic about when it would give a band larger than 25 miles — there were a few times it could have stayed at 25 mile increments and included towns much larger than for example Eagle, AK, but instead it made 50 or 100 or 150 mile jumps.
The answer is any city in the band, not the largest. I haven’t heard of any issues with this quiz before now and it’s setup correctly.
started in wylie, tx and ended in yakima, wa
Started at Dublin, OH. got like 14 of the first 22 or something just using “Franklin” hehehe
Calais, Maine is really weirdly placed. Had me really confused
I think it’s marked at the center of the city limits, the city has a good-sized area.