UltraPedestrian Inland Northwest Loop (UP North Loop). Team UltraPedestrian is attempting a linkup of the Idaho Centennial Trail, Oregon Desert Trail, Pacific Crest Trail, and Pacific Northwest Trail to form a 2,634 mile long UP North Loop. . Follow along online. The MapShare site shows the progress of someone tracking with an inReach satellite communicator. Read messages they have sent to MapShare. You can even reply.