|Length:||11.3 miles (18.2 km)|
|Route outline (key)|
The B873 is a relatively short road in central Sutherland. It was originally unclassified but gained its number before 1932.
The road starts on the A836 just north of Altnaharra and heads east. At first it runs through a small forestry plantation before it drops down to the shore of Loch Naver. As it heads along the north side of the loch there are often stunning views in both directions. After about seven miles, the end of the loch is reached, and the road swings round to the north into Strathnaver proper, passing the occasional farm until the tiny settlement of Syre is reached. Just past the tin church, the road ends where the southbound B871, coming from the A836 near Bettyhill, TOTSOs left.