MILTON, Mass. – There are plenty of stories about runners getting lost in the woods, encountering each other from opposite directions, or suddenly swapping positions despite a pass never taking place during the early years of the Trail Animals “Don’t Run Boston” 50K. Those were some obvious tells that someone likely misread their map, missed a turn, or had some other navigational mishap while trying to complete the event’s unmarked course on the trails of the Blue Hills Reservation.