First choose a difficulty by typing ‘beg’, ‘int’, ‘adv, or ‘exp’ – Beginner is 200km radius, Intermediate 100km, Advanced 50km, and Expert 25km. Then, enter 1K+ population cities and all 1K+ population cities within that radius will automatically fill in.
hugequiz Premium members will see the 50 largest missed cities at the end of the quiz as large, purple markers.
NEW: Premium members can now also play a 3-hour time limit 'custom' coverage quiz of any distance from 5km to 500km, simply enter the distance followed by a '.' instead of choosing from one of the four levels, i.e. '350.' Quiz score is not recorded for the custom coverage option.
Quiz Takers 
Perhaps a list of the stations you’ve guessed somewhat like with the periodic table.
Possibly with a per letter scorecard
1st try 77 done
A National Rail stations quiz for all train stations in the UK would be neat.
More time. There’s no way you can get it all done in that time (yes, I see two people have done so, but I am very dubious). Also, it didn’t pop up afterwards with the top 50 most difficult ones. Was this intentional?
there’s 30 minutes now and there are bonuses along the way…so I bumped it up a bit.
Should have more time, I could have done way more with more time. Otherwise good 🙂
a ton of UK (especially London) new users here – so this is for you! let me know if i need to accept any alternates.
Mr. Holmes, first name Sherlock, would like you to know the street he lives on is the name of a Tubeway Station.
Very good quiz, thank you. Echoing gmaric.22, could have done with some more time. You’re asking for two seconds per guess which isn’t possible for us mere mortals.
ill bump it up a little soon