The road measures 18.98 miles long and would take a car obeying speed limits 24 minutes to travel its length.
The B851 is a B Road and is located in the Zone 8 Highways Region.
This is a true long-distance route, journeying through numerous towns like Dunmaglass, Aberarder, Croachy, Flichity, Farr, Inverarnie, Daviot, Nairnside, and Culloden Moor.
The road connects Inverness and Inverness.