North America City Coverage
DirectionsFirst chose a difficulty by typing ‘beg’, ‘int’, ‘adv, or ‘exp’ – Beginner is 500km radius, Intermediate 250km, Advanced 100km, and Expert 50km. Then, enter 10K+ population North American cities and all 10K+ population cities within that radius will automatically fill in. North America refers to the continent geographically, not politically.