The road measures 7.88 miles long and would take a car obeying speed limits 14 minutes to travel its length.
The A891 is a A Road and is located in the Zone 8 Highways Region.
This is a true long-distance route, journeying through numerous towns like Blanefield, Strathblane, Campsie Glen, Lennoxtown, and Milton Of Campsie.
The road connects Stirling and Falkirk and Dunbartonshire.