Winthrop · Okanogan County · WA
National Forest Development Road 155 is a 1.7-mile intermediate trail near Winthrop, in Okanogan County, WA. It climbs 180 ft and descends 790 ft, between 3,499 ft and a high point of 4,111 ft. Mapped for winter sports.
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Trail data © OpenStreetMap contributors (ODbL). Elevation: USGS 3DEP. Updated 2026-07-21. Open the interactive map for routing, weather, and offline use.