Obviously the back door.
From Create Your Own Story
You immediately head for the back door with no precaution to what may lay ahead, you don't have time to wait around for a zombie to break into your house, you need to go! Hurriedly you go out to the backyard where you are faced with two choices, you can go through the woods which are about a mile in length before breaking into a suburban neighborhood or go around to the front of your house.
