Orienteering is a sport requiring participants to travel an exact route through difficult terrain. Popular in Europe, this map and compass activity is fast gaining adherents in America. Because disciples go about their business with the same Lutheran reserve as the sport’s Scandinavian founders, you might not have heard of orienteering. “Map-heads” make it back in time for dinner or work, and are not the type to go missing while shooting sensational home movies in the forest.