The trail will also die off in places for a short stint or prove difficult to discern amongst various debris. RELATED: Fallout 4: How Settlement Supply Lines Work Along the trail, you will run into ghouls, and other threats, so stay alert. It's not a leisurely walk through the park, though. Now you'll need to follow the trail until you reach the Old North Church in Boston's North End district. But the oversimplified concept is the same. You will notice this red trail leading from the bottom of the crest. Actually, it's red paint rather than bricks in places and more of a line than a road, really.