The road measures 22.70 miles long and would take a car obeying speed limits 40 minutes to travel its length.
The B870 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 THURSO, Glengolly, HALKIRK, Scotscalder, Westerdale, and Watten.
The road connects Caithness and Caithness.