Use the Google Maps quiz to name as many of the 100K+ world cities which are at least 150km from their nearest 100K+ neighbor. When done, enter the yellow codes into the Sporcle quiz. SEE NOTES.
NOTES: I have disabled zooming due to wanting to use the hybrid map style to see the country labels, zooming in more would show city labels. When a correct answer is given, a radius 'circle' will display around it (darker for larger radii), and hovering over the green marker will show the distance to closest 100K+ city. A wrong answer will show a red marker, which when hovered over will show the distance and name of the nearest 100K+ city. There are codes for the four countries with 20+ cities, as well as based on cities within countries and cities in certain radius ranges.