I drove 25 on a camping trip from Santa Fe to Pueblo before continuing on 50... don't let the size of this map fool you: they might look close, but holy **** one of the longest and most mind-numbing drives I've ever done. Scenery is beautiful though!
Nice quiz, but I'd prefer the cities to be in order along the highway; i.e. south to north, or west to east. Ideally, the order would be in line with the way mile markers are set.