Here’s a contribution from the Olympic National Park Wilderness Map:
Here we have trail and primitive trail distinguished by two different dash patterns, plus a special yellow highlight for the Pacific Northwest Trail. A parenthetical tells us that a primitive trail may be difficult to follow, so we can assume that the other trail classification should generally be easier to follow. Here is a sample of all three line styles on the map:
Now here is another area of the map where the Pacific Northwest Trail follows the South Coast (below Third Beach) and the North Coast (above Rialto Beach). Some sections of this yellow highlighted line have long black dashes indicating trail or short black dashes indicating primitive trail, but other sections lack a black line of any kind. These sections have no visible path and the hiking route simply follows the shoreline.
