|Location Map ( geo)|
|Distance:||1.9 miles (3.1 km)|
|Met (1934):||B865, unclassified|
|Now part of:||B9166|
|Route outline (key)|
Prior to the extension to John o Groats of the A9 in 1935, everything to the north of Inverness had been in the 8-zone. As such the road from Balintore on the Moray Firth inland to Fearn was the B866.
Following the change, the numbers of the B roads in the extended 9-zone were adjusted from B8xx to B91xx, so that the B866 (which found itself entirely on the eastern side of the new A9) became the B9166, which it remains, see that route for more details.