From Puget Sound in Washinton to fishing villages in Maine, the Northern Tier crosses four mountain ranges- the Cascades, Rockies, Adirondacks and Appalachians. Along the way the route passes through Glacier National Park, the headwaters of the Mississippi, and Amish country. Discover the beauty of America by crossing the country on the Northern Tier. For more information on this route or to print out the most up to date addenda for these maps please click here.