How do you recognize a true San Franciscan? Probably by the fact that he or she knows what streets to avoid on foot to get around hills.

Consider this new map designed by Sam Maurer, a U.C. Berkeley student, your new best San Francisco friend. On the Hillmapper, the colors red and blue show the uphill and downhill areas. The more intense the color, the steeper the hill. And if you don’t want to bother thinking about this, well just stay in the Mission where it’s mostly flat anyway.