This segment leads from the famed Pinot Noir village of Montan, situated at an elevation of 500 meters above sea-level, to Gfrill at more than 1,300 meters above sea-level. Proceed via the railroad line of the former Fleims Valley railroad until you come to the Glen Waterfall. From there, the trail is uphill via the hamlet of Gsteig (rest-stop, food/drink, and overnight lodgings) towards Gschnon, where there are additional lodging options. You will then take the last part of the route from the Kalkofen parking lot along forest paths and over the Gfrill Saddle until you arrive in Gfrill, the final destination of this segment.
Helpful hint for this route: Take the little side-trip from Gsteig to the impressive "Kanzel" looming high above the Unterland. You'll be rewarded with a fantastic view!